Hydrogen is a type of gas. Hydrogen is part of water, which is two parts hydrogyn and one part oxygen.
Hydrogen has a mean weight of 1.00794 u and was discovered in 1766
If you mean is the bond in hydrogen gas, H2 ionic then the answer is no.
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Hydrogen
it is the number of mole in hydrogen per cubic decimeyer
I guess you mean "hydrogen". Mars doesn't have any significant hydrogen.
There is one electron per hydrogen atom, and two atoms per molecule of hydrogen. So if you mean hydrogen gas, there are two electrons.
H2S is the formula of Hydrogen sulfide.
Depends on what you mean by "get clean"?
Hydrogen peroxide
As a chemist, I have no idea what "an extra hydrogen molecule in sucrose" is supposed to mean. There is no "extra hydrogen molecule in sucrose".
If you mean hydrogen in elemental form, it's darn near zero.