Answer:
option C
Explanation:
isotopy is a phenomenon where an element have the same atomic number but different mass number.the isotopes of hydrogen include,protium, deuterium,and tritium.They all have atomic number of 1 but different mass number of 1,2,3 respectively.
The three naturally occurring isotopes of hydrogen have the same atomic number while they have different masses.
The isotopes can be defined as the member of the same family of an element having the same number of protons but a different number of neutrons.
The hydrogen family has three naturally occuring which are represented by ¹H, ²H, and ³H, and their names are Protium, Deuterium, and Tritium. Out of the three isotopes, isotope ³H is unstable while the other two isotopes are the stable isotopes of hydrogen.
The number of neutrons in the three isotopes are:
¹H = Protium has 0 number of protons,
²H = has only 1 proton,
³H = Tritium has 2 number of protons,
hence, the three naturally occurring isotopes of hydrogen have the same atomic number while they have different masses because of the different numbers of neutrons present.
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