Question

which principle is vialated in 1s2,2s2,2p6,3s1,3p6​

Answer 1

Answer:

3s1

Explanation:

the order should be

1s2,2s2,2p6,3s2,3p6

Answer 2

Answer

Hund's rule is violated in the electronic configuration 1s0 2s2 2p4. According to the Hund's rule,all the subshells present in an electronic configuration, have to be occupied by single electron before any kind of double electron occupation by a subshell.