6
Helium has 2 electrons
One
number of electons
the number of electrons will depend on the halogen under consideration. But all halogens have 7 valence electrons
10
about 16
4
it has 11 electrons
17 electrons.
One(1)
6
30 electons
7 protons
One - assuming the atom is not an ion.
The Answer is 4.....!
Helium has 2 electrons