Chapter 6: Chemical Bonding, Modern Chemistry. This is a working presentation of the notes for this chapter. Meaning that we may or may not cover all of the material here.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIESsarunkumar31
periodic table, modern periodic law, nomenclature of elements greater than 100,electronic configuration and types of elements,periodic trends in properties of elements.ionization enthalpy, effective nuclear charge, electronegativity, s, p d and f block elements, covalent radius, ionic radius, predicition of group, period and block, electron gain enthalpy, periodic trends and chemical reactivity
The attractive force which holds various constituents (atom, ions, etc.) together and stabilizes them by the overall loss of energy is known as chemical bonding. Therefore, it can be understood that chemical compounds are reliant on the strength of the chemical bonds between its constituents; The stronger the bonding between the constituents, the more stable the resulting compound would be.
Chapter 6: Chemical Bonding, Modern Chemistry. This is a working presentation of the notes for this chapter. Meaning that we may or may not cover all of the material here.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIESsarunkumar31
periodic table, modern periodic law, nomenclature of elements greater than 100,electronic configuration and types of elements,periodic trends in properties of elements.ionization enthalpy, effective nuclear charge, electronegativity, s, p d and f block elements, covalent radius, ionic radius, predicition of group, period and block, electron gain enthalpy, periodic trends and chemical reactivity
The attractive force which holds various constituents (atom, ions, etc.) together and stabilizes them by the overall loss of energy is known as chemical bonding. Therefore, it can be understood that chemical compounds are reliant on the strength of the chemical bonds between its constituents; The stronger the bonding between the constituents, the more stable the resulting compound would be.
AS Level Physics' Radioactivity PresentationAkmal Cikmat
AS Level Physics' Radioactivity group presentation in class.
covers up the question on:
-Why certain nucleus is radioactive
-Radioactive process
-Half-life
-exponential decay curve
with a very lil' detail explanation for each subtopic.
In the Topic of Nuclear Chemistry study about the physical and chemical properties of elements influenced by changes of atomic nucleus and also deals with releasing of energy from nuclear reactions and its uses
In the Topic of Nuclear Chemistry study about the physical and chemical properties of elements influenced by changes of atomic nucleus and also deals with releasing of energy from nuclear reactions and its uses
In the Topic of Nuclear Chemistry study about physical and chemical properties of elements and also deals with releasing of electrons from nuclear reactions and its uses
Here we will discover a new type of chemical change in which an atom changes from one element to another by nuclear transformations. Here we will also learn about nuclear radiation.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
1. Nuclear Stability and Decay
• More than 1500 different isotopes are known. Of
those, only 264 are stable and do not decay over time.
• One factor that affects the stability of nucleus is the
ratio of neutrons to protons.
• Too many or too few neutrons relative to the number
of protons makes the nucleus unstable.
• A neutron vs proton plot of stable nuclei form a
pattern called the band of stability.
3. • For elements with atomic numbers 20 or less, this
ratio is about 1:1. Above atomic number 20, stable
nuclei have more neutrons than protons.
• The band of stability can be explained by the
relationship between the nuclear force and the
electrostatic forces between protons.
– As the number of protons in a nucleus increases, the
repulsive electrostatic force between protons increases
faster than the nuclear force.
– More neutrons are required to increase the nuclear force
and stabilize the nucleus.
– Beyond the atomic number 83, bismuth, the
repulsive force of the protons is so great that
no stable isotopes exists.
4.
5. Half-Life
– Every radioisotope has a characteristic rate of
decay, which is measured by its half-life.
– Half-life is the time required for one-half of the nuclei
in a radioisotope sample to decay.
– During each half-life, half of the remaining
radioactive atoms decay into atoms of a new
element.
– Each radioactive nuclide has its own half-life. Half-
lives can be a short as a fraction of a second or as
long as billions of years.
6.
7. • One isotope that has a long half-life is uranium-238.
– 4.5 billion years
– decays through a complex series of unstable
isotopes to the stable isotope of lead-206.
9. – The following equation can be used to calculate
how much of an isotope will remain after a given
number of half-lives.
A = Ao x (1/2)n
• A stands for the amount remaining, Ao for the
initial amount, and n for the number of half-
lives.
10. Half-Life Sample Problem
Phosphorus-32 has a half-life of 14.3 days.
a) How long is four half-lives?
b) If you started with 24.0 g of phosphorus-32, how
many grams of the isotope remain at the end four
half-lives?
11. Outcome Sentences
• After reflecting on
today’s lesson,
complete three of the
sentence starters.
• Sentence Starters
– I’ve learned…
– I was surprised…
– I’m beginning to wonder…
– I would conclude…
– I now realize that…
Editor's Notes
Uranium-238 decays through a complex series of radioactive intermediates, including radon (Rn) gas. Interpreting Diagrams What is the stable end product of this series?
