Question

The atomic number of na , mg are 11 and 12 respectively and they belong to same period ( chem ls 5).
a.Which one should have smaller atomic size?
b.Which would be more electropositive? C)to which group would each one belong?

Answer 1

Explanation:

a) Magnesium will have smaller atomic size when we eliminate it's Valence shell electrons

b) Sodium bcoz it Valence shell is 1 the. time require to remove is less compared to magnesium

c) both are from S - Block but sodium is in 1st group and magnesium in 2nd Group

Answer 2

Answer:

a)Mg

b)Na

c)Na belongs to 1st group and 3rd period

Mg belongs to 2nd group and 3rd period