Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
1. Elements in the same row belong to the
same
.
period
2. Elements in the same column are
group
members of the same
.
3. ...
Review
Periodic table
Groups
18
Elements in each group have similar
properties
Periods
7 periods
Electron Configuration
Electrons orbit around the
nucleus
Form a “cloud” around the
nucleus
The “cloud” has “layers”
“...
Energy Levels
 Labeled with capital letters
 “K” first shell
 Closest to the nucleus
Energy Levels
 Holds up to 2 electrons
 “L” shell is the second
 Holds up to 8 electrons
Energy Levels

“M” shell is next
Holds up to 18
electrons
There are more than 3
shells
Energy Levels
 No. of shells depends on
the no. of electrons
 Each shell must be full
before a new one forms
Valence Electron(s)
Electron(s) in the outer most
shell of an atom
The group number tells you
the number of valence
elec...
Valence Electron(s)
Group 1, 1 valence
electron
Group 13?
3
Determines an elements
reactivity
Valence Electron(s)
The period tells you how
many energy shells an atom
has
And which shell the valence
electron(s) are ...
Octet Rule
Elements need 8
valence electrons to be
stable
Or their outer shell is
full
Argon Atom

8 valence electrons = stable
Outer shell is full = stable
Upcoming SlideShare
Loading in …5
×

Electron Configuration

570 views

Published on

Published in: Technology
  • Be the first to comment

Electron Configuration

  1. 1. 1. Elements in the same row belong to the same . period 2. Elements in the same column are group members of the same . 3. Elements that have many similar properties belong to the same group . 4. Generally, the atomic mass of elements increases as you move from left to right and from top to bottom on the Periodic Table.
  2. 2. Review Periodic table Groups 18 Elements in each group have similar properties Periods 7 periods
  3. 3. Electron Configuration Electrons orbit around the nucleus Form a “cloud” around the nucleus The “cloud” has “layers” “Layers” = energy shells
  4. 4. Energy Levels  Labeled with capital letters  “K” first shell  Closest to the nucleus
  5. 5. Energy Levels  Holds up to 2 electrons  “L” shell is the second  Holds up to 8 electrons
  6. 6. Energy Levels “M” shell is next Holds up to 18 electrons There are more than 3 shells
  7. 7. Energy Levels  No. of shells depends on the no. of electrons  Each shell must be full before a new one forms
  8. 8. Valence Electron(s) Electron(s) in the outer most shell of an atom The group number tells you the number of valence electron(s)
  9. 9. Valence Electron(s) Group 1, 1 valence electron Group 13? 3 Determines an elements reactivity
  10. 10. Valence Electron(s) The period tells you how many energy shells an atom has And which shell the valence electron(s) are in
  11. 11. Octet Rule Elements need 8 valence electrons to be stable Or their outer shell is full
  12. 12. Argon Atom 8 valence electrons = stable Outer shell is full = stable

×