Question

What are Isobars?

Answer 1

Isobars

• Isobars are atoms of different elements with different atomic numbers but have the same mass number.
• Electronic configurations of isobars differ.
  

Examples of isobars

• Argon$\left({\mathrm{Ar}}_{18}^{40}\right)$, potassium$\left({\mathrm{K}}_{19}^{40}\right)$, and calcium$\left({\mathrm{Ca}}_{20}^{40}\right)$ are examples of isobars.
• Here,$18$,$19$, and $20$ are the atomic number of argon, potassium, and calcium respectively.
• All the above-mentioned atoms have the same mass number that is$40$. However, their atomic numbers are different.
• Therefore, they are classified as isobars.6.2834d44e4f43bc7efedcc08.

Electronic configuration for isobars:

Take an example of a pair of isobar i.e.,⁴⁰₂₀Ca and ⁴⁰₁₈Ar

• The electronic configuration of isobar ⁴⁰₂₀Ca is 2,8,8,2
• The electronic configuration of isobar ⁴⁰₁₈Ar is 2,8,8.
• The electronic configurations of both isobars are different.
• Since the number of electrons of both isobars are different.