Question

question 6 (1 point) which of the following is the correct noble gas notation for magnesium (mg)? a ar 2s² b he 3s¹ c ne 3s² d ne 3s¹

Explanation:

Step1: Determine magnesium's atomic number

Magnesium has an atomic number of 12.

Step2: Identify the nearest noble - gas before magnesium

The nearest noble - gas before magnesium is neon (Ne), which has an atomic number of 10.

Step3: Write the remaining electron configuration

After accounting for the 10 electrons of neon, magnesium has 2 remaining electrons which go into the 3s orbital. So the noble - gas notation is [Ne]3s².

Answer:

C. [Ne] 3s²