The chemical characteristics or reactivity of an element depend mostly on the __________.

Question

Answer
Unselected
degree to which it has more or fewer electrons than protons

Unselected
number of electrons in its outermost shell

Unselected
mean energy level of its electrons

Unselected
number of electron shells present in the atoms

Unselected
number of protons plus the number of neutrons

Answer 1

The chemical characteristics or reactivity of an element depend mostly on the number of electrons in its outermost shell.