Question

Explain why H31 and H32 are not considered isotopes.

Answer 1

3H1 and 3HE2 are not considered as isotopes as they have different atomic no. but same mass no..but isotopes have same atomic no. and different mass no.

Answer 2

Hydrogen 1,3 and Helium 1,3 are not the isotope pairs.

Explanation:

• Hydrogen 1,3 and Helium 1,3, these are not the isotope pairs.

We know that,  

• An isotope pair is the same Atomic Number But Different Mass Number, due to difference in Electrons.

Now taking this case into account, wherein the atomic numbers are different but mass number is the same, hence they are called isobars.

• But in this case, the atomic mass is the same but the atomic number is different.hence they are isobars.

Now,

$H_{1}^{3}\ and\ H_{2}^{3}$ -

• Which means they have a different atomic number but the same mass number, whereas Isotopes have got the different mass number but a same atomic number.