If z is an atom's atomic number and a is its atomic mass, the atom's neutrons are expressed as: a + z z - a a - z z = a

N = A - Z

Explanation:

As we know that total number of nucleons is given by sum of number of neutrons and protons.

This is known as total nucleons.

So representation of atom is given by

here

z = number of protons in atom

A = total number of neutrons and protons

So here if we wish to find number of neutrons then we have

N + Z = A

N = A - Z

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate