Question

PLEASE HELP

Which of the following is a characteristic property of the alkaline earth
metals?
A. They are harder than alkali metals.
B. They are more reactive than alkali metals.
C. They all have 3 valence electrons.
D. They are all radioactive.

Answer 1

the answer is A

Step-by-step explanation:

I hope it helps you

Answer 2

It's D, they're all radioactive. This is due to the molecules that it is made up of