Question

The ground state electron configuration of Ga is _______.

A. 1s2 2s2 2p6 3s2 3p6 4s2 4d10 4p1
B. 1s2 2s2 3s2 3p6 4s2 3d10 4p1
C. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4d1
D. [Ar] 4s2 3d11
E. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1

Answer 1

The ground state electron configuration of Ga is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1. Electron configuration of Ga in Shorthand configuration is [Ar] 3d10 4s2 4p1. Thus, the correct answer is option E. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1

Step-by-step explanation:

• The ground state electron configuration of Ga is E. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1.
• Gallium (Ga) has an atomic number of 31. The electron configuration is determined by filling the orbitals in order of increasing energy.
• Electron configuration of Ga in Shorthand configuration is [Ar] 3d10 4s2 4p1
• The noble gas symbol [Ar] in the answer represents the electron configuration of the previous noble gas, argon.
• The electron configuration of Ga then continues with 4s2 3d10, representing the filling of the 4s orbital followed by the 3d orbitals. Finally, there is one electron in the 4p orbital.