Nuclei with the same mass number but different atomic numbers are called isobars. Consider Ca-40, Ca-41,K-41 and Ar-41.
Which of these are isobars? Which are isotopes?
What do Ca-40 and Ca-41 have in common?
Correct the statement (if it is correct): Atoms of Ca-41, K-41,and Ar-41 have the same number of neutrons.