Question

In what orbital would to valence electrons of strontium be found? a.) 5s b.) 4s c.) none d.) 5p​

Answer 1

The correct answer is 5s

Step-by-step explanation:

Strontium atomic number = 38

Electronic configuration is
`$1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(10) 4s^(2) 4p^(6) 5s^(2)`

As
`$5s$` orbital is valence orbital in strontium, the outer electrons exists in that orbital only.