General Knowledge - Chemistry - Discussion

Only one p and e for periodic tables.

It is element in periodic table.

It is simply the first element on the periodic table.

Hydrogen atom is a topest elements Periodictable but H contains 1 e- and 1proton no neutron. .

Hydrogen has three isotopes.

One is protium, second deutrium, third tritrium.

Protium is the only hydrogen isotopes whose abundance on the earth--- is more than that of the other two isotopes.

And by default we always consider protium has one proton n one electron and so it's mass is 1g.

Whereas, deutrium has one nuetron, one proton, n one electron and hence it's mass is 2g.

And, tritium has two nuetrons, one proton, one electron. Hence it's mass is 3g.

Aand B both are correct as it says 'only Hydrogen'. 2 neutrons and one proton means its Tritium.

Hydrogen has only one electron (electronic configuration) and proton, zero neutrons:
Atomic.no - Mass.no = 1 - 1
So, Neutron = 0.

Hydrogen is the first element in our periodic table its atomic number is one so its having one electron and one proton.

In chemistry, the term proton refers to the hydrogen ion, H+. Since the atomic number of hydrogen is 1, a hydrogen ion has no electrons and corresponds to a bare nucleus, consisting of a proton (and 0 neutrons for the most abundant isotope protium 1 1H).

Hydrogen contains only one Positive Charge in its Nucleus i.e., contains only one Proton. Number of Positive Charges in equal to its Number of Protons in any neutral atom. So, Hydrogen contains only one Proton in its Nucleus.