Hydrogen bonds are the bonds between two water molecules. All molecules have covalent bonds, but only some molecules have hydrogen bonds. As an example, water has hydrogen bonds, but carbon dioxide does not. One of the requirements for hydrogen bonding is that the molecule must be polar. Water molecules are polar because of two effects.

2017年1月14日 · If a molecule gains or looses electrons, it is reduced or oxidized, respectively. If a hydrogen atom leaves a molecule, taking it's single, formerly shared electron with it, then the molecule has lost an electron and is thus oxidized. Your argument sort of assumes that formal charge alone determines a molecule's oxidation state.

2013年1月26日 · Therefore, the formula $\ce{HHO}$ is either a very idiosyncratic way of denoting a molecule of water (normally written $\ce{H2O}$ and occasionally $\ce{HOH}$, in order to emphasize its structure, i.e., H-O-H), or it refers to oxyhydrogen, which isn't actually a molecule at all, but rather a mixture of hydrogen and oxygen gases (the molecules ...

2021年4月8日 · If molecular hydrogen is dissociated, or two hydrogen atoms in space collide, how much energy (in $\pu{eV}$, or perhaps $\pu{kJ/mol}$) does it take for an $\ce{H_2}$ molecule to form?

2013年8月11日 · Energy of hydrogen bonds vs. kinetic energy of water molecules 1 Does the probability function for a molecule to have energy in a certain mode depend on the minimum required quantum energy level of that mode?

2019年5月15日 · But the answer to the question is no, a hydrogen molecule is still bigger than a hydrogen atom. $\dagger$ But just barely. Define the edge of an atom or molecule as the point where the electron density equals that at a distance of $\pu{1 Bohr}$ ( $\pu{0.529 Å}$ ) from the nucleus in a hydrogen atom.

2023年3月6日 · As i read this diagram [(b) in the picture],the probability of finding the 2 electrons in a hydrogen molecule is higher around each hydrogen atom nucleus. But molecular theory says that the electron density is the highest between the 2 nuclei. The diagram shows that the highest ψ^2 values are on the hydrogens nuclei and not between them.

2015年5月17日 · A molecule that has hydrogen bonding usually follows these two premises. 1.) There is a hydrogen atom involved. 2.) Hydrogen must be bonded to a highly electronegative element which are nitrogen ($\ce{N}$), fluorine ($\ce{F}$) and oxygen ($\ce{O}$).

2022年1月12日 · And since we know that only the singlet state leads to formation of a bond, we expect 25% of atom collisions to be able to form a hydrogen molecule. NOTE: As @Paul pointed out in the comments, the explanation here is solely regarding the probabilities of bond formation that come from the spin statistics. There are further effects from collision ...

2018年12月28日 · This treatment is more complicated when you add a second electron since the potential energy also includes the repulsion between the two electrons. But the concept is the same and the resulting hydrogen molecule is the configuration of nuclei and electrons that minimizes total energy based on the opposing influences of $\hat{T}$ and $\hat{V}$.