Question

complete the orbital diagram for the following neutral element: antimony (sb)
note: by convention, always start with the \up\ arrow.

Explanation:

Step1: Determine atomic number of antimony

Antimony (Sb) has an atomic number of 51.

Step2: Fill orbitals according to Aufbau principle

Start filling orbitals in order of increasing energy: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p³.
1s: ↑↓
2s: ↑↓
2p: ↑↓ ↑↓ ↑↓
3s: ↑↓
3p: ↑↓ ↑↓ ↑↓
4s: ↑↓
3d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
4p: ↑↓ ↑↓ ↑↓
5s: ↑↓
4d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
5p: ↑ ↑ ↑
6s, 4f, 5d, 6p remain empty for neutral Sb in ground - state.

Answer:

1s: ↑↓
2s: ↑↓
2p: ↑↓ ↑↓ ↑↓
3s: ↑↓
3p: ↑↓ ↑↓ ↑↓
4s: ↑↓
3d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
4p: ↑↓ ↑↓ ↑↓
5s: ↑↓
4d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
5p: ↑ ↑ ↑
6s:
4f:
5d:
6p: