Question

question 10 (1 point)
which of the following is the correct noble gas notation for magnesium (mg)?
o a ne 3s²
o b ne 3s¹
o c he 3s¹
o d ar 2s²

Explanation:

Magnesium has an atomic number of 12. Neon (Ne) is the noble - gas with an atomic number of 10. After filling the neon - like core, there are 2 remaining electrons which go into the 3s orbital. So the noble gas notation for magnesium is [Ne]3s².

Answer:

A. [Ne] 3s²