Question

3. The mass number of the isotopes of hydrogen protium ,deuterium and
tritium is 1,2, and 3 respectively. The atomic number all the isotopes is
1.Write the number of
a) Protons
b) Neutrons
c) Electrons in protium ,Deuterium and Tritium
​

Answer 1

Answer:

Atomic number = 1

Protium = Protons 1, Neutrons 0, Electrons 1

Deuterium = Protons 1, Neutrons 1, Electrons 1

Tritium = Protons 1, Neutrons 2, Electrons 1

Answer 2

Answer:

Isotopes of the same elements are atoms having different number of neutrons.

The atomic number of all the isotopes is 1.

The mass number of:

a) Hydrogen - 1

b) Protium - 2

c) Deuterium - 3

d) Tritium - 4

Hydrogen:

protons - 1

electrons - 1

neutrons - 0

1) Protium:

protons - 1

electrons - 1

neutrons - 1

2) Deuterium:

protons - 1

electrons - 1

neutrons - 2

3) Tritium:

protons - 1

electrons - 1

neutrons - 3

It is important to keep in mind that isotopes only differ in terms of neutron number, not the protons and electrons number. The atomic number will be the same as that of the main element ( here, hydrogen ), only the mass number will change with respect to the neutron number. Thus, nucleon number will also change.