Question

Calculate the number of neutrons, protons and electrons (i) atomic number 3 and mass number 7 (ii)atomic number 92 and mass number238

Answer 1

(i) no of electrons is 3
no of protons is 3
no of neutron is =mass no - atomic no
means 7 - 3= 4
(ii) no of protons is 92
no of electron is 92
no of neutron is = mass no - atomic no
means =238-92 =142

Answer 2

HERE IS UR ANSWER..

1. no. of electron is 3
no. of proton is 3
no. of neutrons is 7-3= 4

2. no. of electrons is 92
no. of protons is 92
no. of neutrons is 238-92=146
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