Question Detail
Question
How many neutrons are present in the nuclide Na? (Not fully written, assumes ²³Na)
Correct Answer
Option B is the correct answer.
Detailed Explanation
Sodium-23 (²³Na) has atomic number 11 (protons). Neutrons = mass number - atomic number = 23 - 11 = 12.
Hint
Neutrons = mass number - atomic number.