Question Detail

CHM 101 Quantum Theory and Atomic Structure Objective Question

Question

What is the atomic mass of an aluminum atom with 13 protons and 14 neutrons?
Options
A 13
B 14
C 27
Correct Answer
D 40
Correct Answer

Option C is the correct answer.

Detailed Explanation

Atomic mass is the sum of protons and neutrons in an atom. For aluminum with 13 protons and 14 neutrons, the atomic mass is 13 + 14 = 27 atomic mass units.

Hint

Add the number of protons and neutrons to calculate the atomic mass.

Question Info