Question

The outer electronic configuration of an element (Z = 90) is $5f^{0}6d^{2}7s^2$. It belongs to

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

Answer 1

The correct option is C

d-block

Since last electron enters into (n –1)d level, it belongs to ‘d’ – block