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Elemental Hydrogen is a diatomic element. At STP (standard temperature and pressure) the stable form of the element is for two atoms to be bonded together.
In Hydrogen's case, each atom of Hydrogen brings one electron. These two electrons are shared, forming a covalent bond. This sharing of each of the atom's electrons is a more stable state than that of having only a single electron. Stable states are thermodynamically preferable.
Electrons travel around atoms in orbitals. Each orbital has two electrons.
For Hydrogen, having the 1s orbital filled with it's original electron and the electron shared from the other atom is more stable.
In atoms above Helium, the octet rule prevails.
What else can I help you with?
Why hydrogen gas exists as H2 rather than H?
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Helium is a gas which is used in balloons because it is lighter than air.But hydrogen is a gas which is even lighter than the helium.Why helium is used rather than the hydrogen?
Because Hydrogen is highly flammable, and will easily and rapidly burn in the air and turn into H2O (water).
What if the hydrogen is not a gas but something else?
Hydrogen can exist as a solid, a liquid, a gas, or a plasma, as well as many other states.
Does hydrogen exist as a diatomic?
Yes, hydrogen gas exists as a diatomic molecule with the formula H2.
What are the three elements that exist as a gas at room temperature and pressure?
Hydrogen, nitrogen, oxygen, fluorine, chlorine, and all the noble gases exist as a gas at standard temperature and pressure.
What gas is heavier hydrogen or oxygen?
oxygen gas is heavier than hydrogen gas
Is hydrogen a vapor or is it a gas?
Hydrogen is an element. It can exist as a gas, as molecules of H2, but also as compounds, like water, H2O.
Is hydrogen gas a element?
No. Although hydrogen is an atom, it doesn't exist by itself (except as an ion). Hydrogen gas is a hydrogen molecule made of two hydrogen atoms.
A light colourless gas that is flammable?
Hydrogen gas is the lightest gas and extremely 'flammable', rather called explosive.
Does hydrogen exist as a gas a liquid and a solid with Jupiter?
Probably there is some hydrogen in all of these states deep in Jupiter's atmosphere.
Is hydrogen more dangerous than oxygen Why?
Hydrogen is dangerous than Helium because Hydrogen is a stronger gas than Helium.
What gas law explains the replacement of hydrogen to helium in blimps?
The replacement of hydrogen in blimps with helium is not based on the gas laws but rather on the fact that hydrogen is highly flammable whereas helium is entirely non flammable. In fact based on the gas laws hydrogen would actually be better for blimps because its has lower molecular mass and is therefore less dense than helium.
