on the innermost shell of any element there is 2 electrons (except for Hydrogen, but that's a different story) so the answer would be 2
The very inner shell of an atom is the 1st shell and can only contain 2 electrons.
2, there is always 2 in the inner shell.
There are 2 valence electrons in Barium.
2
Boron has 3 electrons in the outer shell and 2 electrons in the inner.
there are 2 electrons in the inner shell of a hydrogen atom.
The very inner shell of an atom is the 1st shell and can only contain 2 electrons.
2, there is always 2 in the inner shell.
2 electrons in each shell: 2,8,18,18,8,2
There are 2 valence electrons in Barium.
It will lose 2 electrons.
2
Boron has 3 electrons in the outer shell and 2 electrons in the inner.
Two.
8
2
A bromine atom has seven electrons in its outermost shell.