Do isobars have the same number of neutrons?

Isobars have same numbers of

The pair of atoms having the same number of neutrons is

Which of the following pairs is/are correctly matched ? 1. Isotopes : Atoms with same atomic number but different atomic mass 2. Isobars : Atoms with same number of neutrons but different atomic number 3. Isotones : Atoms with same mass number but different atomic number Select the correct answer using the code given below :

Atoms of different elements having the same number of neutrons but differnet atomic numbers are called

Consider the following statements- I. Isotopes are atoms having same number of protons but different number of neutrons. II. Isotopes are atoms having same number of neutrons but different number of protons. III Isotopes are atoms having same number of protons and neutrons. Choose the correct statement.