How many electrons are present in ^4He^2+?
1. None of these
2.3
3.5
4.4
5.2
6.6
7.1
8.0
Thank you!
1. None of these
2.3
3.5
4.4
5.2
6.6
7.1
8.0
Thank you!
-
He has 2 protons (+), neutrons and electrons(-).
The 2+ means that it there must be 2 less electrons than protons.
So 0 electrons.
The 2+ means that it there must be 2 less electrons than protons.
So 0 electrons.
-
None of these. There are 2 electrons present.