Question

The mass number of elements is 23 and it contains 11 electrons. What are the no. Of protons and neutrons in it

Answer 1

The no. Of protons and neutrons in it are 11 ad 12 respectively.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

For an electrically neutral atom,

Atomic number = Number of electrons = Number of protons = 11

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons  

23= 11 + Number of neutrons  

Number of neutrons = 12

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