Question

15. Calculate the number of electrons, protons and neutrons in the following elements . (i) 40Ca20 (ii) 35Cl17 (iii) 56Fe26​

Answer 1

i)40–20=20

ii)35–17=18

iii)56–26=30

Answer 2

Answer:

Atomic number z=35

Mass number=80

No. of proton p=35

No. of neutron n=80−35=45

No. of electron e=35