A Chlorine Atom Has 17 Protons and 18 Neutrons

Question

A chlorine atom has 17 protons and 18 neutrons. What is its atomic mass?
A) 1 amu
B) 17 amu
C) 18 amu
D) 35 amu
E) 306 amu

Accepted Answer

The atomic mass of an atom is the sum of its protons and neutrons. For a chlorine atom with 17 protons and 18 neutrons, the atomic mass is 17 + 18 = 35 amu.