Question

Write the number of neutrons in 37 upon 17 cl

Answer 1

The mass number is a tally of the number of protons and the number of neutrons in an atom's nucleus. Since all atoms of chlorine contain 17 protons, chlorine-35 and chlorine-37 differ in the number of neutrons each one has

Answer 2

An element is represented by notation :

C

X

Y

Where C= mass number = number of

Protons+ neutrons

Y= atomic number = number of protons= number of electrons.

Now given element is

37

Cl

17

Number of protons=17

Mass number = 37

So number of neutrons = mass number- number of neutrons

                                       = 37-17=20

Number of neutrons=20