What noble gas core would be used when writing the ground state electron configuration for magnesium (Mg)?
A)[Ne]
B)[Xe]
C)[Rn]
D)[He]
E)[Ar]

Question

Quizplus · Accepted Answer

The noble gas core used for magnesium (Mg), which has an atomic number of 12, is [Ne] (neon), as neon is the noble gas with an atomic number of 10, making it the closest noble gas with a lower atomic number than magnesium.

What Noble Gas Core Would Be Used When Writing the Ground