Question

use the aufbau principle for all problems !!! 1. give the complete electron configuration of gallium using the form 1s² 2s² and so on.

Explanation:

Step1: Determine gallium's atomic number

Gallium (Ga) has an atomic number of 31.

Step2: Apply Aufbau Principle

Fill orbitals in order of increasing energy: 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p.
1s can hold 2 electrons, 2s can hold 2 electrons, 2p can hold 6 electrons, 3s can hold 2 electrons, 3p can hold 6 electrons, 4s can hold 2 electrons, 3d can hold 10 electrons, and we use remaining electrons for 4p.
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹

Answer:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹