Question

If elements have the same number of valence electrons, they are

a) called halogens
b) called noble gases
c) in the same group
d) in the same period

Answer 1

c

Step-by-step explanation:

valence is the number of electrons in the outer most she'll.. therefore all elements in the same group have the same valences for example group one elements have a valence of one

I hope this helps