Question

Isobars are:

• A. chemically and physically same
• B. chemically same but physically different
• C. chemically different but physically same
• D. chemically and physically different

Answer 1

Answer: (D)

chemically and physically different

Atoms having same atomic mass and different atomic numbers are known as Isobars. That is, isobars are elements, which are chemically as well as physically different. Since, their number of electrons is different, their chemical properties are different and since they are different elements, their physical properties will also be different.