Question

Select the relation between atomic number, mass number and number of neutrons
A. Mass number = atomic number + number of neutrons
B. Mass number = atomic number/number of neutrons
C. Mass number =atomic number number of neutrons
D. Mass number = atomic number - number of neutrons​

Answer 1

Answer:

Each atom also has a mass number, denoted by the symbol A. The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number.

Number of neutrons = mass number - atomic number

or

Mass number = number of protons + number of neutrons

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Answer 2

Answer:

A)

Explanation:

The answer to this question is a).

As Mass = Number of proton + Number of neutron and

Number of proton = Number of electron and

Atomic number = Number of electron.

So, Atomic number = Number of proton ;

So, Mass number = Atomic number + Number of neutrons.

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