Question

Write the subshell electronic configuration of the following elements:
i))Phosphorus
ii))Bromine
iii)Silicon
iv)Magnesium

Answer 1

i)Phosphorus - $1s^{2}2s^{2}2p^{6}3s^{2}3p^3$
ii)Bromine - $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^5$iii)Silicon - $1s^{2}2s^{2}2p^{6}3s^{2}3p^2$
iv)Magnesium -$1s^{2}2s^{2}2p^{6}3s^2$