The element hydrogen has three naturally occurring isotopes, h-1, h-2, h-3. what is the number of protons, neutrons, and electrons in h-3, or tritium? a) 1 proton, 1 neutron, 1 electron b) 1 proton, 2 neutrons, 1 electron c) 1 proton, 1 neutron, 3 electrons d) 2 protons, 1 neutrons, 1 electron

Option B is correct.

B) 1 proton, 2 neutrons, 1 electron

The number of protons, neutrons, and electrons in H-3, or tritium are one proton, one electron and two neutrons.

Hydrogen has no neutron, deuterium has one, and tritium has two neutrons. The isotopes of hydrogen have, respectively, mass numbers of one, two, and three. Their nuclear symbols are therefore 1H, 2H, and 3H. The atoms of these isotopes have one electron to balance the charge of the one proton.

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