Question

5 what is the highest occupied energy level in an atom of strontium in its ground state? * (0.5 points) n=2 n=6 n=3 n=1 n=4 n=5

Explanation:

Step1: Recall strontium's atomic number

Strontium has an atomic number of 38.

Step2: Write electron - configuration

The electron - configuration of strontium in its ground state is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}$.

Step3: Identify highest occupied energy level

The highest principal quantum number ($n$) of the occupied orbital is 5.

Answer:

n=5