How many core electrons does helium have?

Answer 1

Helium does not have any core electrons because a core electrons are basically all non-valence electrons and helium only has two electrons which are both valence electrons.

Answer 2

it has 2 electrons i think you can tell by subtracting both numbers together

Answer 3

Helium has 2 core electrons. Core electrons are the inner electrons of an atom that are not involved in chemical bonding.