Question

Total number of electrons contained in all the $p$-orbitals of bromine is

• A. 5
• B. 17
• C. 19
• D. 23

Answer 1

Answer: (B)

Electronic configuration of $Br$ is
$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^5$
Hence total number of electrons in $p$-orbital
$=6+6+5=17$