Which element has the following ground state electron configuration?
Q3
a) Al
b) Na
c) B
d) Ga
The ground state electron configuration of an element refers to the arrangement of electrons in its atoms when they are in their lowest energy state.
The electron configuration for Q3 can be determined using the periodic table and the principles of filling electron orbitals.
The electronic configuration for Al is 1s2 2s2 2p6 3s2 3p1.
The electronic configuration for Na is 1s2 2s2 2p6 3s1.
The electronic configuration for B is 1s2 2s2 2p1.
The electronic configuration for Ga is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1.
Comparing the given electron configuration Q3 (1s2 2s2 2p6 3s2 3p10), we can see that the only element with this configuration is Ga. Therefore, the element with the given ground state electron configuration is d) Ga.