2. Atoms & Elements
Subatomic Particles
6PRACTICE PROBLEM
Consider the following table showing symbols, the number of protons, electrons, and neutrons, and the mass number. Each column represents a neutral atom.
![](https://lightcat-files.s3.amazonaws.com/problem_images/598d94034e17c5e9-1662627338910.jpg)
Fill in the third column of this table.
Consider the following table showing symbols, the number of protons, electrons, and neutrons, and the mass number. Each column represents a neutral atom.
Fill in the third column of this table.