Question

part a
what is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?
18
12
6
8

Explanation:

Step1: Recall atomic mass formula

Atomic mass = Protons + Neutrons.

Step2: Substitute given values

Given 6 protons and 6 neutrons. So, Atomic mass = 6 + 6.

Step3: Calculate result

6+6 = 12.

Answer:

B. 12