Question

can u give me the answer of question c

Answer 1

15 electrons , 15 protons and 20 neutrons and in 2nd isotope of chlorine, there are 17 electrons , 17 protons and 20neutrons

Answer 2

No. of protons = atomic no.
=15
No of electrons =no of protons
=15
no of neutrons =mass no -atomic no
=35-15
=20
and for second part
no of protons = atomic no of atom
=17
no of electrons =no of protons
=17
no. of neutrons =mass no -atomic no
=37-17
=20