Question

Write electronic configuration (in shells) of following elements -
(a) F (9)
(b)P (15)
(c) Ca (20)​

Answer 1

Explanation:

$\sf _{9}{F} ={1s}^{2}\: {2s}^{2} \:{2p}^{5}$

$\sf _{15}{P} ={1s}^{2}\: {2s}^{2} \:{2p}^{6}\:{3s}^{2}\:{3p}^{3}$

$\sf _{20}{Ca} ={1s}^{2}\: {2s}^{2} \:{2p}^{6}\:{3s}^{2}\:{3p}^{6}\:{4s}^{2}$

THANKS!!!