Which of the following are isotopes and which are isobars ?
Argon, Deuterium, Calcium, Tritium, Protium
The mass number of two atoms X and Y is the same (40 each) but their atomic number are different (being 20 and 18 respectively). X and Y are examples of :
The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are :
The atomic species A and B have different number of protons but the same number of nucleons. On the other hand, the atomic species X and Y have the same number of protons but different number of nucleons. Which pair is an example of isobars ? Why ?