Question

The number of p-electrons in bromine atom is:

• A. 12
• B. 15
• C. 7
• D. 17

Answer 1

Answer: (D)

Br (At. no =35) E.C $=1s^2,2s^{2}2p^6,3s^{2}3p^{6}3d^{10},4s^{2}4p^5$ $\therefore$ Br atom has 17 p-electrons.