Question

The mass number of iodine is 126, and it’s in the 53rd place in the periodic table. It has protons and neutrons.

Answer 1

Answer:

proton is 53

neutron is 74

Explanation:

mass number = no of proton + no of neutron

mass no- no of proton = no of neutron

atomic number = no of proton

so therefore;

mass no=126

no of proton =53

then;

126- 53=74

no of neutron is 74