If Argon has a mass number of 40 and an atomic number of 18, how many electrons does a neutral atom contain? A.40 B.20 C.22 D.18

asked Jun 2, 2021 178k views

3 votes

If Argon has a mass number of 40 and an atomic number of 18, how many electrons does a

neutral atom contain?

A.40
B.20
C.22
D.18

7.7k points

Please log in or register to add a comment.

4 votes

C) 22 because the mass of a neutron is 1 amu and a proton is also 1 amu, so 40-18=22

Jawap answered Jun 9, 2021

by Jawap

8.7k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers