Cl atom 17-. 1s2,2s2,2p6,3s2,3p5.. They will change according to hunds rule as.. They will be singly occupied each.. And hence there will be no difference with the previous arrangements... Singly accupied means.. The valency of p is 6.. Means 1 is left.. Then on excitation all will have sinlgly occupied electtrons.. Hope u got me.. There will be no change....
1 5 1
can you plzz elaborate u r answer and make it more clear !!
I have tried my best..