Question

if A = 1s^2, 2s^2, 2p^1
B=1s^2, 2s^2, 2p^6, 3s^2, 3p^1
C=1s^2, 2s^2, 2p^6, 3s^2,3p^3
D= 1s^2, 2s^2, 2p^6, 3s^2,3p^5
E= 1s^2, 2s^2, 2p^6, 3s^2,3p^6, 4s^2
F= 1s^2, 2s^2, 2p^6, 3s^2,3p^6, 4s^2,3d^1
(a) Which is the most metallic.
(b) Which has the highest negative value for electron gain enthalpy.
(c) Which one belongs to the d block.
(d) Which is a halogen.
(e) Which two elements are in same group.
(f) Which elements belongs to the 13th group.​

Answer 1

ANSWER

(i) and (ii) represent the electronic configuration (ns

2

np

1

) of elements come from the same group, i.e. Boron family.