Question Detail

CHM 101 Quantum Theory and Atomic Structure Objective Question

Question

In nuclear symbol notation, what does the subscript represent?
Options
A The mass number
B The atomic number
Correct Answer
C The number of neutrons
D The charge of the ion
Correct Answer

Option B is the correct answer.

Detailed Explanation

In nuclear symbol notation, the subscript (bottom number) represents the atomic number, which is the number of protons in the nucleus. For example, in ²³⁵U, 92 is the atomic number for uranium.

Hint

The smaller number in nuclear notation is typically the atomic number.

Question Info