Question

If the mass number of an element is not given to us,and we have only no of protons , electrons, and atomic number then how can we find the number of neutrons.


pls answer correctly and wrong answer or irrelevant answer will be reported..... .​

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.

Answer 2

Answer:

You can find neutrons by subtracting atomic no. from mass no.

And to find mass no. we can add electrons and neutrons

Eg-

To find neutrons

Chlorine

Atomic number = 17 , Mass number = 37

Atomic number = no. of electrons and protons

Therefore,

Electron = 17

Proton = 17

Neutron = Mass number - Atomic number

= 37 - 17

Neutron = 20