Question

There are 2,8 and 7 eletrons in the shells k,l, and M respectively. If the mass of the atom is 37, what is the number of neutrons

Answer 1

Answer:

20

Explanation:

you can calculate atomic no. by adding the no. of electrons in all the shells and then by subtracting it from the mass no. , you get the value of no. of neutrons...