an atom has 70 protons, 70 electrons, and 99 neutrons. what is the mass number? group of answer choices

asked Apr 26, 2023 227k views

12 votes

by Llekn

7.3k points

Please log in or register to add a comment.

4 votes

Answer:

169

Step-by-step explanation:

protons+neutrons=atomic mass

70+99=169

ToddR answered May 1, 2023

by ToddR

7.4k 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