All questions of Atoms, Elements and Compounds for Grade 11 Exam

How can you find the number of neutrons in an atom?
a)
Add the atomic number and mass number
b)
Subtract the mass number from the atomic number
c)
Subtract the proton number from the nucleon number
d)
Divide the mass number by 2
Correct answer is option 'C'. Can you explain this answer?

Prepworks Coaching answered

To find the number of neutrons in an atom, you need to subtract the atomic number (proton number) from the mass number (nucleon number). Neutrons, along with protons, make up the nucleus of an atom. This difference between the mass number and the atomic number gives us the number of neutrons in the atom.

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