Question

complete the orbital diagram for the element zinc
blank orbital diagram
increasing energy
fill in the lowest energy orbitals first!

Explanation:

Step1: Recall zinc's atomic number

Zinc (Zn) has an atomic number of 30, so it has 30 electrons.

Step2: Fill electrons according to Aufbau principle

Start filling from the lowest - energy 1s orbital. The 1s orbital can hold 2 electrons. Then fill 2s (2 electrons), 2p (6 electrons), 3s (2 electrons), 3p (6 electrons), 4s (2 electrons), and finally 3d (10 electrons).
1s: ↑↓
2s: ↑↓
2p: ↑↓ ↑↓ ↑↓
3s: ↑↓
3p: ↑↓ ↑↓ ↑↓
4s: ↑↓
3d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
The remaining orbitals (4p, 5s, etc.) remain empty as all 30 electrons are accounted for.

Answer:

1s: ↑↓
2s: ↑↓
2p: ↑↓ ↑↓ ↑↓
3s: ↑↓
3p: ↑↓ ↑↓ ↑↓
4s: ↑↓
3d: ↑↓ ↑↓ ↑↓ ↑↓ ↑↓
4p: (empty)
5s: (empty)
and so on for higher - energy orbitals.