Electronic Structure of the first 20 elements of the Periodic Table
Group 1
Group 2
Hydrogen ,H
Group3
Group 4
Group 5
Group 6
Group 7
Helium, He
For each Element
 Write out the atomic number at the bottom right of the box
 Write out the Relative Atomic Mass at the top right of the box
 Draw out the Electron Structure in the energy levels provided
 Write the Electron Configuration under the name
Period 1
Group 0
Beryllium, Be
Boron, B
Carbon, C
Nitrogen, N
Oxygen, O
Fluorine, F
Neon, Ne
Sodium, Na
Magnesium, Mg
Aluminium, Al
Silicon, Si
Phosphorous, P
Sulfur, S
Chlorine, Cl
Argon, Ar
Potassium, K
Calcium, Ca
Period 4
Period 3
Period 2
Lithium, Li
Questions (answer in your books)
 What can you say about the electron structure of the elements across a Period?
 What can you say about the electron structure of the elements down a Group?
 What do you notice about the electron structure of the the elements in Group 0?
 What do you know about the reactivity of Group 0 elements?