Question

Using the periodic table, explain the difference between hydrogen, deuterium, and tritium - i.e. hydrogen-1, hydrogen-2, and hydrogen-3.

A)
Allotropes vary in their number of protons - so they contain 1, 2, and 3 protons, respectively.


B)
The atoms deviate in their number of photons - so they contain 1, 2, and 3 photons, respectively.


C)
Isotopes differ only in their number of neutrons - so they contain 0, 1, and 2 neutrons, respectively.


D)
These configurations diverge in their number of electrons - so they contain 1, 2, and 3 electrons, respectively.

Answer 1

C. Hydrogen's atomic NUMBER is 1 (one proton, one electron). Hydrogen's MASS number is also 1 (one proton)
Deterium's ATOMIC number is still 1, but it's MASS number is 2 (1 proton and one neutrons) ISOTOPES (not allotropes)
Tritium 1 and 3 (1 proton and two neutrons)
http://perendis.webs.com