Identify the isotopes and isobars from the following list of atoms with given number of protons and neutrons. A:8p+9nB:8p+8nC:18p+22nD:20p+20n.

Identify the isotopes and isobars from the following list of atoms wit

1.	Identify the isotopes and isobars from the following list of atoms with given number of protons and neutrons. A:8p+9nB:8p+8nC:18p+22nD:20p+20n.
Answer» Solution :A and B have the same NUMBER of PROTONS but different number of neutrons. Hence A and B are isotopes. C and D have different number of protons, but the sum of the protons annd neutrons, in both the CASES, are the same. Hence, C and D are isobars.