An atom has 2 electrons,3 protons,and 3 neutrons.What is the atom's mass number?
A)3
B)5
C)6
D)8
E)Cannot be determined from the information given

Name: An atom has 2 electrons,3 protons,and 3 neutrons.What is the atom's mass number? A)3 B)5 C)6 D)8 E)Cannot be determined from the information given
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Question

Quizplus · Accepted Answer

The mass number of an atom is the sum of its protons and neutrons. This atom has 3 protons and 3 neutrons, so the mass number is 6.

An Atom Has 2 Electrons,3 Protons,and 3 Neutrons