Isotone of a nucleus have same number of:

CONCEPT:

• Isotones are atoms or nuclei which have an equal number of neutrons.
• Cl-37 and K39 both have the same number of neutrons.
• Isobars are Atoms of a chemical element that have the same atomic mass but a different atomic number.
• Isotopes are Atoms of a chemical element that have the same atomic number but a different atomic mass.

EXPLANATION:

• From the above, it is clear that the Isotone of a nucleus has the same number of neutrons. Therefore option 2 is correct.

• Isomers are atoms of the same element with the same mass number and atomic number but which are in different excited states.
• The atoms of an element having the same atomic number but a different mass number are called isotopes.
  • All isotopes have the same chemical properties.
• The nuclei which have the same mass number (A) but a different atomic number (Z) are called isobars.
  • Isobars occupy different positions in the periodic table so all isobars have different chemical properties.