Question

An atom of strontium has at least four different isotopes. What is the difference between an isotope of 88 Sr and an isotope of 84 sr

Four electrons
Four protons
four neutrons
two protons and neutrons

Answer 1

Option C= Four neutrons

Explanation

Isotope

Any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties.

Isotopes have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties.

That’s why 88 Sr has four more neutrons as compared to 84 Sr.

Answer 2

Answer : Option C) Four Neutrons

Explanation :

The isotope of strontium
`^(88) Sr` has at least four different isotopes. The difference between an isotope of
`^(88) Sr` and an isotope of
`^(84) Sr` will be of four neutrons. As isotope has same atomic mass, but different mass number. An isotope has same number of protons but different number of neutrons. In case, of strontium 88 and 84;
`^(84) Sr` there are four neutrons less than
`^(88) Sr`.