Explanation:
An isotope is defined as the specie which contains same number of protons but different number of neutrons.
For example, is an isotope of hydrogen atom.
The number at the bottom of the symbol of an element represents the number of protons present in the atom.
So, the given atom contains only one proton and 0 neutrons. Also, when an atom is neutral in nature then it contains same number of protons and electrons.
But as the given atom has one +1 charge which means that it contains 0 electrons.
Thus, we can conclude that contains 1 proton, 0 neutrons and 0 electrons.