Atom of hydrogen-2 has one proton, one neutron, and one electron. Particles that identify the atom as hydrogen are :electron and proton.
There are three isotopes of hydrogen namely: protium (¹H), deuterium (²H) and tritium (³H).
Protium is the most abundant isotope, consisting of one electron, one proton and zero neutron.
Deuterium or hydrogen-2, consists of one electron, one proton and one neutron. (D, or(²H) is the symbol for deuterium and is called heavy hydrogen.
Tritium is an isotope of hydrogen that consists of one proton, two neutrons, and one electron. (³H) is the symbol for tritium and the atomic number of tritium is 1 and the atomic mass of tritium 3.
To know more about hydrogen-2, refer
https://brainly.com/question/13471559
#SPJ4