Question

Statement 1: The atoms of different elements having same mass number but different atomic number are known as isobars.
Statement 2: The sum of protons and neutrons, in the isobars is always different

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$.
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$.
• C. If Statement $1$ is true but Statement $2$ is false.
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (C)

The statement $1$ that the isobars are the atoms of different elements having same mass number but different atomic number, is correct but statement $2$ is false because atomic mass is sum of number of neutron and protons which should be same for isobars.