Question

Statement I: ${}^{20}Ne$ and ${}^{22}Ne$ are isotopes.

Statement II: Noble gases do not exist as isotopes as they are inert.

• A. Both statements are incorrect
• B. Statement I is incorrect but statement II is correct
• C. Statement I is correct but statement II is incorrect
• D. Both statements are correct

Answer 1

The correct option is C Statement I is correct but statement II is incorrect

Isotopes of an element have the same atomic number but a different mass number.

Neon is a noble gas ${(}_{10}Ne)$ has three stable isotopes, ${}^{20}Ne{,}^{21}Ne$, and ${}^{22}Ne$.

Therefore, statement I is correct but statement II is incorrect.