Question

calculate the number of electron , proton , and neutron if its atomic number is 20 and mass number is 40

Answer 1

electron is 20 and proton is 20 because no.of electrons is equal to atomic no. and electron is equal to proton.and proton is equal to neutron so no.of neutron is 20 .plz mark as brainliest

Answer 2

1. atm no. = no. of electrons= no. of protons= 20
2. atm mass= no. of protons + no. of neutrons
this implies ...40 = protons + neutrons
40= 20 + neutrons
neutrons= 20