Periodic table exercise
Solutions
Complete the table below.
Element
Atomic number
Period
Group
Na
11 (2,8,1)
3
1
Be
4 (2,2)
2
2
C
6 (2,4)
2
4
Ne
10 (2,8)
2
8
Si
14 (2,8,4)
3
4
Na
11(2,8,1)
3
1
Cl
17 (2,8,7)
3
7
O
8 (2,6)
2
6
Mg
12(2,8,2)
3
2