There are two atomic species `X` and `Y`. such that

Which of the following statement is true about `X` and `Y` ?

Options

A. `X` and `Y` are isobars
B. `X` and `Y` have different chemical properties
C. `X` and `Y` have different physical properties
D. All are correct

Answer

C

Explanation

X and y have same number of protons but different number of neutrons i.e., same atomic number but different mass numbers hence, these are isotopes. Isotopes have same chemical properties but different physical properties.