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Why is the diatomic molecule H2 more stable than two separate hydrogen atoms?
Wiki User
∙ 12y ago
There are three sets of interactions in this system: The 4th explains: Why? # Repulsion between the two electrons (one interaction of this type) # Repulsion between the two nuclei (one interaction of this type) # Attractions between each electron and nucleus (four separate interactions of this type # Therefore a single hydrogen atom is less stable and requires less energy to break down.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoIt completes the octet rule, or in other words the valence shell is filled. Once hydrogen bonds with hydrogen it shares the two electrons and is stable like He. It requires less energy, and is therefore more stable, to bond.
Wiki User
∙ 9y agoH2 is more stable than 2H. That is, when two hydrogen atoms bond together the energy of the resulting hydrogen molecule (H2) is lower than the sum of the energies of the two free atoms (2H). This can be intuitively understood by thinking about the valence shells for these two examples. A valence shell is the outermost shell of electrons in an atom. Atoms "want" to have a full valence shell. Most shells are full with 8 electrons. The first shell will be full with 2 electrons. A single, neutral hydrogen atom has one electron in its valence shell. To fill the valence shell, one hydrogen can bond to another hydrogen. The two hydrogen atoms can share their electrons, thus each hydrogen atom will have a full valence shell.
But this explanation is only a way to intuitively understand why H2 is more stable than 2H. The truth is that any stable molecule will have a lower energy than the sum of its individual atoms. Energy is always released when chemical bonds are formed, and it always requires energy to break a chemical bond. This idea may sound counter-intuitive to many people. It is a common misunderstanding that the opposite is true; that by breaking chemical bonds energy is released and energy is required to form chemical bonds. Of course, an entire chemical reaction might require energy to occur (endothermic) or energy could be released over an entire chemical reaction (exothermic) but the individual bonds that are broken will always require energy while the bonds formed will always release energy.
Wiki User
∙ 11y agoBecause helium has completely filled orbitals, hydrogen doesnot.
Wiki User
∙ 13y agoBecause contain two hydrogen atoms.
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Why is it important that oxygen forms a diatomic molecule?
It is the most stable form of oxygen as an element.
Is chlorine a diatomic molecule and why?
Yes because chlorine molecules bond to themselves to become more stable.
Diatomic elements are generally stable.?
Yes, Diatomic elements are usually stable.
Are diatomic elements are generally stable.?
Yes, these elements are stable.
What does h h H2 in science?
H is the atomic symbol for hydrogen. H2 is the chemical formula for the hydrogen molecule, which is the most common and stable form of hydrogen gas.
What is the cleavage of hydrogen?
Cleavage of hydrogen is a chemical reaction in which the diatomic molecules that are the stable form of hydrogen at standard temperature and pressure separate into their individual atomic components: H2 -> 2 H.
Why is it important that oxygen forms a diatomic molecule?
It is the most stable form of oxygen as an element.
What type of bond holds two hydrogen atoms together in hydrogen gas?
The bond holding the diatomic molecule of hydrogen (which exists in hydrogen gas) is a single covalent bond. This is the sharing of one electron in their 1s orbital, forming an stable electron that of helium: 1s2
Why can ammonia molecule react with hydrogen ions but not hydrogen gas?
hydrogen gases are stable so they will react no further while hydrogen ions have no electrons so it will react with the ammonia molecule thus becoming g stable
Is chlorine a diatomic molecule and why?
Yes because chlorine molecules bond to themselves to become more stable.
Is silver a diatomic molecule?
Gold has one stable isotope and many radioactive ones.
What are the elements that form diatomic molecules?
There are seven diatomic molecules: H2, O2, N2, F2, Cl2, Br2, and I2. For anyone who does not know what a diatomic molecule is, in science, "di" means "two", and "atomic" obviously means "atoms". So a diatomic molecule is a molecule with two atoms of the same element. These seven diatomic molecules are the only ones that when combined, do not react. These are known as stable compounds. Hope this helps.
Diatomic elements are generally stable.?
Yes, Diatomic elements are usually stable.
How many atoms are there in one mole of hydrogen gas Using avogadros constant?
2(6.022*10^23) if we are assuming diatomic hydrogen gas (most stable). 6.022*10^23 if it is elemental hydrogen.
Why the reaction between hydrogen and chlorine is very slow at room temperature?
Because hydrogen molecule is very stable and it is because of high dissociation enthalpy of hydrogen molecule, it reacts slowly with chlorine at room temperature.
Is oxygen element monoatomic or diatomic?
Oxygen can either be diatomic, monoatomic and triatomic. The question is which one is the most stable. The most stable is obviously diatomic oxygen O2. Next is triatomic (ozone) O3 and the least stable (very unstable) is monoatomic. Monoatomic oxygen is very shortly living species combining easily (due to very high electronegativity) with large number of elements including another oxygen atom. If we are required to say which is the most common form of oxygen then we need to say it is diatomic O2 existing at room temp and atmospheric pressure as a gas.
How do you combined two hydrogen atoms into a single hydrogen molecule?
You don't need to, they'll do it on their own. Individual atoms of hydrogen are not chemically stable and will spontaneously recombine.
