Atoms of elements that are in the same group have the same number of

Aprotons.
Cvalence electrons.
Bneutrons.
Dprotons and neutrons. Please select the best answer from the choices provided A B C D

Verified Answer :

CValence electrons. Same number of electrons in the outermost shells. This is why elements in the same groups undergo similar reactions.

Answer:

c. valence electrons.

Explanation:

In the periodic table, the elements in each group has the same number of electrons in their outer orbital, those electrons are called ''valence electrons''.

That's why.