Question

write the convection increasing order of energies of E2s(he),E2s(h),E2s(k),E2s(kr)​

Answer 1

Explanation:

(i) Higher the value of Z lower is the value of E

2s

( z value for K is 19).

(ii) Maximum number of electrons =2n

2

.

(iii) The extra stability of half-filled subshell is due to higher exchange energy.

(iv) Only two electrons with opposite spin can exist in the same orbital.

mark me as BRAINLIST ANSWER