Question

Predict which of the following statements are true :
The total number of neutrons and protons in isobars is the same.

• A. True
• B. False

Answer 1

The correct option is B False

Isobars:

1. In isobars, the total of protons and neutrons is always different.
2. Isobars are atoms of various elements with the same mass number but distinct atomic numbers.
3. $$\begin{gathered} \mathrm{Mass}\mathrm{number}=\mathrm{Number}\mathrm{of}\mathrm{protons}+\mathrm{Number}\mathrm{of}\mathrm{neutrons} \\ \mathrm{Atomic}\mathrm{number}=\mathrm{Number}\mathrm{of}\mathrm{protons}=\mathrm{Number}\mathrm{of}\mathrm{electrons} \end{gathered}$$
4. Example: ${}_{18}{}^{}\mathrm{Ar}^{40}$ and ${}_{20}{}^{}\mathrm{Ca}^{40}$.

Hence, the given statement is false.