How many of each subatomic particle does a stable Sodium (Na) atom have?

Question

Column A
1.
protons:
protons
2.
neutrons:
neutrons
3.
electrons:
electrons
Column B
a.12
b.34
c.11
d.23

Answer 1

Column A
1. protons: 11
2. neutrons: 12
3. electrons: 11

Column B
c. 11
a. 12
c. 11