contestada

I WILL AWARD BRANLIEST!!!!!!!!!!! PLEASE ANWSER ITS FOR A TEST What determines an atom's reactivity?
A) How many protons the atom contains.
B) How many energy levels the atom contains.
C) Whether the atom is a metal or a nonmetal.
D) How many valence electrons the atom contains.

Respuesta :

myliahlongsdon

Answer:

Explanation:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

1228247

Answer:

Explanation: The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

So it b