Question

calculate the number of electron proton and neutron in 40k+ ​

Answer 1

Answer:

Given Ion is K+

Atomic number of K+ ion is 19

So number of Protons= 19

As one electron is removed , so number of electrons=18

Mass number= Number of protons +number of neutrons

40=19+number of neutrons

number of neutrons=40-19=21

So 40K+ has 18 electrons, 19 protons and 21 neutrons