Question

Elements a, b, c and d have the following electronic configurations:

a : 1s² , 2s² , 2p⁶ 

b : 1s² , 2s² , 2p⁶ , 3s² , 3p¹ 

c : 1s² , 2s² , 2p⁶ 3s² ,3p⁶ 

d : 1s² , 2s² , 2p¹ 

Which elements among these will belong to the same group of periodic table?

Answer 1

2. In the above elements, Ne and Ar belong to same group (Noble gases – 18^th group). 

3. Al and B belong to the same group (13^th group).