Question

please help this is due in 30 minutes!!

Answer 1

I believe the answer is A : 10. Hope this helps :D

Answer 2

Answer:

Hello. The answer is A (10)

Explanation:

If you memorize the periodic table it will be very easy to answer.

But if you don't know،

The solution is to count the electrons number

In an atom usually electrons number is equal with protons number

In this shape there are 10 electrons

So there are 10 protons in nucleus.