Question

Statement 1: Isobars have same chemical and physical properties.
Statement 2: Isobars are the atoms with equal number of nucleons.

• A. Only Statement 1 is true
• B. Only Statement 2 is true
• C. Both statements are true
• D. Both statements are false

Answer 1

The correct option is B

Only Statement 2 is true

Isobars are the elements with same number of nucleons i.e. protons + neutrons. But the individual count of neutrons and protons are different (only the sum is same).

Thus, different number of protons implies different elements. Each element has its own distinct physical and chemical properties. Therefore isobars don't have same chemical and physical properties.