Question

5 pts An electrically neutral gallium atom has 31 electrons around its nucleus. Which of the following is the correct electronic configuration for a gallium atom that is triply-ionized? O1s22s22p6 352 3p6 4s23d104p1 1s22s22p6 352 3p6 4s2 1s22s22p10 382 3p6 452 304 O 152 2s2 3s22p63p4 1s22s22p6 3s2 3p6 4s2 3d8 No new data to save. Last checked at 9:45a W

Answer 1

The electron configuration for Gallium, Ga is
1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p¹

Explanation:

Gallium, Ga has 31 protons and 31 electrons. The superscripts represent the electrons present in each region of the periodic table.
The sum of these superscripts should equal the atomic number for a neutral atom. The last electron is in the 4th period, in the p region and the first electron in that region.

Correct answer is

(A)