H2 - hydrogen.
H2. Hydrogen gas.
H4P2O6 i suppose :)
It is an expression and a term that are of equal value
2Rb(s) + 2H2O(l) --> 2RbOH(aq) + H2(g)
H2+ has a stronger bond than H2. The addition of a positive charge to the H2 molecule increases the attraction between the two hydrogen atoms, resulting in a stronger bond.
Hydrogen exists as H2 because it is more stable in this form due to the sharing of two electrons between the two hydrogen atoms, forming a covalent bond. This configuration allows hydrogen to achieve a full outer electron shell, making it more energetically favorable and stable than existing as a single H atom.
Ammonium chloride
H2 - hydrogen.
H2. Hydrogen gas.
NaCl + H2.
2Na + 2H2O -> H2 + 2NaOH
The energy of C2H6 is higher than the combined energy of C2H4 and H2. This is because C2H6 is a more stable molecule due to having stronger carbon-carbon bonds, while C2H4 and H2 have weaker bonds. The difference in energy can be attributed to the bond energies and stability of the molecules.
2Na + 2H2O -------> 2NaOH + H2
H2 technically does contain molecules. Or at least, molecule. H2 is two hydrogens covalently bonded, so that the lowest energy level is filled. Since H2 has two atoms (hydrogen and hydrogen), it is not an element, because there is more than one atom. H2 is a molecule itself. However, in context of nature, it is rare that you would ever find an H2 molecule on its own unless you were working with one in a laboratory. So, if you were considering the whole of an H2 gas, there would be many molecules of H2. Short answer: H2 is a molecule itself. Many H2 means there are many molecules of H2.
Potassium is more active than hydrogen (H2) because it readily reacts with water to form potassium hydroxide and hydrogen gas.
The chemical equation is not balanced. It should be balanced as follows: H2 + Cl2 → 2HCl