Any molecule can exist as either:
A Gas, a substance expanding occupy the space it is in and having no particular shape,
A liquid, a substance not expanding, but reshaping to occupy the space it is in, and having no shape,
A solid, a substance not adapting to the space it occupies in any way, and having a definite shape.
no
Yes
element
Hydrogen molecules do exist (as H2); this is how hydrogen is found in nature.
yes they exsist as monoatomic molecule in vapour state
Gas, Solid, & Liquid.
as a gas, solid or liquid
no
No.
Yes
element
0.256 molecule of anything does not exist. The smallest representation of any compound is 1 molecule. If you mean 0.256 mole then: 0.256 mole x (18 g / mole) = 4.608 grams
It is only an atom.
molecule
The molecule of methane is more stable, carbon is tetravalent.
Hydrogen molecules do exist (as H2); this is how hydrogen is found in nature.
A molecule of an element is a molecule made up of the same substance that can exist as an atom; for example, oxygen as O2.