Question

in Phosphorus atom Z = 15 in ground state the numbers of occupied subshells and occupied orbitals are respectively

Answer 1

Answer: -

5 subshells

9 orbitals

Explanation: -

The atomic number of phosphorus P = 15

The electronic configuration of Phosphorus P = 1 s2 2 s2 2 p6 3 s2 3 p3

A subshell is one which has same n and l values.

There are only 1 + 1 +1 +1 +1 = 5 occupied subshells in ground state of phosphorus s and p.

An orbital is one which has same n, l and ml values.

There area total of 1 + 1 + 3 + 1+ 3 =9 orbitals

Answer 2

Answer:

1S2 ,2S2 2P6 ,3S2 3P3

*Sub-shells= 5

*Orbitals= 9