Question

In which block ${106}^{th}$ element belongs?

• A. s-block
• B. p-block
• C. d-block
• D. f-block

Answer 1

The correct option is C

d-block

Let's try to find out electronic configuration of this element. The electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^{14}5d^{10}6p^{6}7s^{2}5f^{12}6d^4$ . Now here we can say that the differentiating electron enters d-orbital. Hence it belongs to d-block.