Question

Please answer the pic is attached

Answer 1

$<h1 > heya$

$<h5 > answer...$

For Cl :-
$1s {}^{2} 2s {}^{2} 2p {}^{6} 3s {}^{2} 3p {}^{5}$

For Ar :-
$1s {}^{2} 2s {}^{2} 2p {}^{6} 3s {}^{2} 3p {}^{6}$

For Ca :-
$1s {}^{2} 2s {}^{2} 2p {}^{6} 3s {}^{2} 3p {}^{6} 4s {}^{2}$

Hope it helps you

$<marquee > prabhudutt$

$<tt > mark as brainliest$