Question

a carbon atom has six protons and six neutrons. what is its atomic number?
a 6
b 12
c 36
d none of the above

Explanation:

Step1: Recall atomic number definition

The atomic number of an element is equal to the number of protons in its nucleus.

Step2: Identify number of protons

The carbon atom has 6 protons.

Answer:

A. 6