Metallic bonding occurs in a giant metallic lattice where metal atoms form positive ions that are held in place by a "sea" of delocalized electrons. Intermolecular forces include instantaneous dipole-induced dipole forces, permanent dipole-dipole forces, and especially strong hydrogen bonds between molecules containing hydroxyl or amino groups. The structures of graphite and diamond are explained by their giant molecular structures held together by these different intermolecular forces.
✔Here is an introduction to the Chemistry of Life, where you will learn about Intermolecular forces. This presentation defines not only the term of intermolecular force but also intramolecular force. Three examples of intermolecular forces are presented. Those are dipole-dipole interactions, hydrogen bond, and the London dispersion force. Vivid examples of these three terms are also presented. ✔
Here is a video:
➡➡➡https://www.youtube.com/watch?v=UqIe6FPOWOA
Check out more interesting posts on LabGirl:
➡➡➡ https://www.facebook.com/labgirldzd
Thank you! :)
✔Here is an introduction to the Chemistry of Life, where you will learn about Intermolecular forces. This presentation defines not only the term of intermolecular force but also intramolecular force. Three examples of intermolecular forces are presented. Those are dipole-dipole interactions, hydrogen bond, and the London dispersion force. Vivid examples of these three terms are also presented. ✔
Here is a video:
➡➡➡https://www.youtube.com/watch?v=UqIe6FPOWOA
Check out more interesting posts on LabGirl:
➡➡➡ https://www.facebook.com/labgirldzd
Thank you! :)
Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory.
Explain covalent bond- Explain Metallic bond and what important proper.docxtodd401
Explain covalent bond?
Explain Metallic bond and what important property derives from it in metals?
Solution
Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability. Nonmetals will readily form covalent bonds with other nonmetals in order to obtain stability, and can form anywhere between one to three covalent bonds with other nonmetals depending on how many valence electrons they posses. Although it is said that atoms share electrons when they form covalent bonds, they do not usually share the electrons equally.
Link : http://chemwiki.ucdavis.edu/Theoretical_Chemistry/Chemical_Bonding/General_Principles/Covalent_Bonds
Metallic bond is the reaction between molecules within metals called alkali reactive force. It was first discovered by K. Manishekar. It is the sharing of a sea of delocalised electrons amongst a lattice of positive ions, where the electrons act as a \"glue\" giving the substance a definite structure.
The electrons and the positive ions in the metal have a strong attractive force between them. Therefore metals often have high melting or boiling points. The principle is similar to that of ionic bonds.
The metallic bond accounts for many physical characteristics of metals, such as strength, malleability, ductility, luster, conduction of heat and electricity.
Because the electrons move independently of the positive ions in a sea of negative charge, the metal gains some electrical conductivity. It allows the energy to pass quickly through the electrons generating a current. Heat conduction works on the same principle - the free electrons can transfer the energy at a faster rate than other substances such as those which are covalently bonded, as these have their electrons fixed into position. There also are few non-metals which conduct electricity: graphite (because, like metals, they have free electrons), and molten and aqueous ionic compounds which have free moving ions
Link : https://simple.wikipedia.org/wiki/Metallic_bond
.
A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds or substance . The bond may result from the electrostatic force of attraction between atoms with opposite charges, or through the sharing of electrons as in the covalent bonds........
Ionic Bonds (between ionic molecules) - Medium strong bond - In an.pdfanton291
Ionic Bonds (between ionic molecules) - Medium strong bond
- In an ionic solid, adjacent ions have electrostatic attractions and are arranged in a lattice
structure.
- Ionic solids have strong bonds resulting in high melting and boiling point temperatures.
Metallic Bonds (bonds between metal atoms) - Weakest strong bond
- Metallic solids are often described as \"a group of nuclei surrounded by a sea of mobile
electrons.\" In other words, the electrons in metallic solids are delocalized and are free to move
about, making metals good conductors of electricity.
- Metallic bonds are still relatively strong forces of attraction and most metals have high melting
and boiling point temperatures.
Mercury is the only metal that is not solid at room temperature.
Hydrogen Bonding - Strongest weak bond
- In hydrogen bonds, the positively charged hydrogen end of one molecule is attracted to the
negatively charged end of another molecule which must be an extremely electronegative element
(fluorine, oxygen, or nitrogen - FON)
Dipole-Dipole Forces - Medium weak bond
- Dipole-dipole forces exist between neutral, polar molecules where the positive end of one
molecule is attracted to the negative end of another molecule.
London Dispersion Forces - Weakest weak bond
- London dispersion forces (LDF) occur between neutral, nonpolar molecules. LDF occur due to
the \"random motion of electrons.\" At any moment, one atom may be surrounded by an extra
electron from a neighboring atom, resulting in an instantaneous polarity on the atom. During that
instant, the \"polarized\" atom will act as a very weak dipole.
Solution
Ionic Bonds (between ionic molecules) - Medium strong bond
- In an ionic solid, adjacent ions have electrostatic attractions and are arranged in a lattice
structure.
- Ionic solids have strong bonds resulting in high melting and boiling point temperatures.
Metallic Bonds (bonds between metal atoms) - Weakest strong bond
- Metallic solids are often described as \"a group of nuclei surrounded by a sea of mobile
electrons.\" In other words, the electrons in metallic solids are delocalized and are free to move
about, making metals good conductors of electricity.
- Metallic bonds are still relatively strong forces of attraction and most metals have high melting
and boiling point temperatures.
Mercury is the only metal that is not solid at room temperature.
Hydrogen Bonding - Strongest weak bond
- In hydrogen bonds, the positively charged hydrogen end of one molecule is attracted to the
negatively charged end of another molecule which must be an extremely electronegative element
(fluorine, oxygen, or nitrogen - FON)
Dipole-Dipole Forces - Medium weak bond
- Dipole-dipole forces exist between neutral, polar molecules where the positive end of one
molecule is attracted to the negative end of another molecule.
London Dispersion Forces - Weakest weak bond
- London dispersion forces (LDF) occur between neutral, nonpolar molecules. LDF occur due to
the \"random moti.
Lecture on Introduction of Semiconductor at North South University as the undergraduate course (ETE411)
=======================
Dr. Mashiur Rahman
Assistant Professor
Dept. of Electrical Engineering and Computer Science
North South University, Dhaka, Bangladesh
http://mashiur.biggani.org
Structure of matter /certified fixed orthodontic courses by Indian dental aca...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
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