Question

Metalloids or semiconductors are the constitutents of which block of the periodic table?

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

Answer 1

The correct option is C p-block

Metalloids or the semiconductors, Silicon (Si) and Germanium (Ge) have their atomic numbers 14 and 32 respectively.
So according to their electronic configuration
Si - $1s^2,2s^{2}2p^6,3s^{2}3p^2$
Ge - $1s^2,2s^{2}2p^6,3s^{2}3p^{6}3d^{10},4s^{2}4p^2$
Last electron in both Si and Ge is placed in the p sub orbit, therefore both the elements belong to the p- block.