Question

Given the atomic notation of 64/30Zn, indicate the number of
protons, neutrons and electrons respectively, in an atom of
zinc.

Answer 1

For the given atomic notation of Zinc, there are 30 protons, 34 neutrons and 30 electrons.

What is mass number?

In Chemistry, mass number is also referred to as atomic number and it can be defined as the total number of protons and neutrons found in the atomic nucleus of a chemical element.

Mathematically, mass number is given by this formula:

A = Z + N  or $^A_ZC$

Where:

• A is the mass number.

• Z is the atomic number or number of protons.

• N is the number of neutrons.

Therefore, we can deduce the following from $^{64}_{30}Zn$;

Number of protons = 30

Mass number = 65

Substituting the parameters into the formula, we have;

$64=30 +N\\\\N=64-30$

Number of neutrons, N = 34.

Since the number of protons is equal to 30, there are 30 electrons in an atom of Zinc.

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