Question

The reported element Ekamercury with atomic number $112$ belongs to the group :

• A. IIB
• B. IIIB
• C. IVB
• D. VIB

Answer 1

Answer: (A)

IIB

Atomic number of eka mercury is 112 and its electronic configuration is as follows: $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{6}4f^{14}5d^{10}6s^{2}6p^{6}5f^{14}6d^{10}7s^2$.
In the above configuration the differentiating electron entering into the d orbital hence it is d block element and the element in d block with $d^{10}{s}^2$ configuration must be in II B group.