Just remember how many electrons can each sublevel hold.
S=2
P=6
D=10
Since we have 10 for atomic number, we can assume we have 10 electrons
1S2
2S2
2P6
The rest have zero because we already have 10 (2+2+6=10)
Hey :)
This time the answer is quantitive because the mentions numbers
Hope this helps!
The answer is d.
Hope this helps plz give brainliest!
78 protons are found in platinum(pt).