Question

What element forms an ion with an electronic configuration of [Xe] and a −2 charge?

a) "Oxygen"
b) "Fluorine"
c) "Krypton"
d) "Sulfur"

Answer 1

The element that forms a -2 charged ion with a [Xe] electronic configuration is sulfur.

Step-by-step explanation:

The element that forms an ion with an electronic configuration of [Xe] and a −2 charge is sulfur. Sulfur, which is in Group 6A of the periodic table, has the electron configuration of 1s²2s²2p¶3s²3p´. To achieve the electron configuration of the next noble gas, xenon ([Xe]), sulfur must gain two electrons. By gaining two electrons, it becomes a sulfide ion (S²−), with a complete outer shell resembling that of xenon and a charge of −2.