Q46
The mass number of a substance represents the sum of total number of
A.
Protons and neutrons in an atom
B.
Protons and electrons in an atom
C.
Neutrons and electrons in an atom
D.
Protons and neutrons in a nucleus
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
The mass number of a substance represents the sum of total number of Protons and neutrons in a nucleus