Question

Aluminum Atomic Number: 13 Symbol: Al Atomic Mass: 26.982 Density: 2.7 Melting Point: 933.47 K Boiling Point: 2792 K Element Classification: Metal It is a solid. And it is found in nature.

Option 1: Hydrogen
Option 2: Gold
Option 3: Aluminum
Option 4: Carbon

Answer 1

The electron configuration of a neutral aluminum atom with an atomic number of 13 is 1s2 2s2 2p6 3s2 3p1.

Step-by-step explanation:

When writing the electron configuration for a neutral aluminum atom, which has an atomic number of 13, we must remember that its electron configuration will fill the orbitals in order of increasing energy. The first two electrons will fill the 1s orbital, the next two electrons will go into the 2s orbital, and the following six electrons will fill the 2p orbitals. The remaining three electrons then go into the 3s and 3p orbitals following Hund's rule. Therefore, the electron configuration for a neutral aluminum atom is 1s2 2s2 2p6 3s2 3p1.