The Periodic Table Quick Check (Connexus)

Question

here answers:
Number 1 = alkali metals and halogens
Number 2 = They have the same number of valence electrons.
Number 3 = They usually have high melting points.
Number 4 = low or no reactivity
Number 5 = 17 - halogens
Ur welcome <3
~/S I A\~

Answer 1

Thank you! That was very helpful.