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∙ 9y agoHydrogen is one of many elements whose atoms do not follow the octet rule. During covalent bonding, hydrogen defies the octet rule because it can only fill its first energy level with two electrons.
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∙ 13y agoThe octet rule has an exception for hydrogen and helium, because they contain only s electrons and a single electron shell that can not contain more than two electrons. These two elements therefore follow a "duet" rule instead of the usual octet rule. Also, since helium already has its duet in a single atom, it does not react with anything else as far as I know.
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∙ 12y agoThe first atomic electron shell, "s", supports only two electrons. This shell gets filled when traversing the periodic table after only the first two elements, Hydrogen and Helium. Many of the rest of the elements in the first part of the Periodic Table are then dealing with the next "p" shell, which supports up to 8 electrons.
"Atoms prefer to bond in a way to have their lowest unfilled electron shell filled, and most atoms have a shell the supports 8 electrons", would be a better re-statement of the octet rule. Since Helium doesn't really participate in chemical bonding and Hydrogen is just one element that has very simple, "trivial" chemistry, wanting always to share one more electron with a single partner, Hydrogen and Helium are not included in the octet rule.
Wiki User
∙ 12y agoeach bond represents two electrons, there can only be so many bonds based on the number of valence electrons present.
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∙ 13y agoThe first level of electrons only supports two electrons. It is full when there are two electrons.
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∙ 8y agoI presume you mean why it doesn't follow carbon in the periodic table. This is because the table is a list in order of proton number. Hydrogen has one proton and carbon has 6.
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∙ 9y agoHydrogen contains only one valence electron(which it may lose or gain another electron) to achieve stability. hence it is odd one out in periodic table.
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What is a stable octet mean?
a stable octet is also known as a full outer shell. it occurs when electrons are added or removed from an atom so the outtermost shell contains its maximum amount, funnily enough Helium is included because is has a full outer shell as opposed to the direct meaning of a full octet. the term full octet refers to the outtermost shell being complete, however a direct definition means the outtermost shell containing EIGHT electrons, which simply isn't possible for something like Helium or Hydrogen. in which case, the full octet of either Helium or Hydrogen is two electrons- this would give Helium no charge at all, but would give Hydrogen a -1 charge, in a diatomic molecule two Hydrogen atoms would share their electrons between them: H=H <--Hydrogen / Helium --> He (would not donate or adopt electrons) more interstingly is the FORMS of Hydrogen. there are three: Hydrogen, deuterium and tritium.
What is an example of unstable atom?
Any of the noble gases (in the right-most column of the periodic table): helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) radon (Rn), and Hydrogen.They all have what is called a stable "octet."See the Related Questions for more information on what the octet rule in chemistry is.
Why do atoms share or transfer electrons?
The number of electrons atoms donate or accept or share has to do with the octet rule. The octet rule is a rule of thumb that reflectfalses thethis is not ture increase stability of an atom when it has a complete valence shell (which is usually 8 valence electrons). Therefore, if an electron has one less electron than is necessary to complete its outer valence shell, it will accept an extra electron. The halides, such as fluorine, chlorine, bromine and iodine are all missing one electron to reach a stable octet (the noble gas configuration), and all accept one electron. The alkali metals, such as lithium, sodium, potassium and rubidium all lose one electron because they have one more electron than the noble gas configuration.See the Related Questions for more information about counting valence electrons and the octet rule.
When metals lose electrons what do they form?
Metals lose electrons and form cations to get a full octet.
Which atom do not contain neutron?
Hydrogen-1, (there is a trace of hydrogen-2 (deuterium) found in nature, and hydrogen-3 is an artificial isotope)
How does oxygen not follow the octet rule?
It does follow the octet rule!
In which bonding patterns does X obey the octet rule?
no it does not follow octet rule
What rule do the nonmetal atoms follow?
octet rule
Is water an exception to the octet rule?
It is one of many, many exceptions to the octet rule. Hydrogen does NOT require 8 electrons.
Does BCl3 follow the octet rule?
nope
Does AsH3 follow the octet rule?
PF5
Explain why hydrogen is unique?
Hydrogen is different because it is the only element to not contain a neutron. It also does not follow the octet rule, and can be"happy" with two electrons like Helium. I hope that covers it!
What is the octet rule in terms of lewis structures?
Octet rule states that each electron wants to complete its octet ( 8 electrons in the outermost shell) or a duplet (in case of hydrogen and helium).
Does H2S follow the octet rule?
H2S does follow the octet rule. When you draw the Lewis Structure for H2S, it looks like this: If you count up the lone pairs and sigma bonds (each worth 2), there are 8, thus, H2S follows the octet rule.
What atoms dont always obey the octet rule?
Hydrogen does not obey the octet rule. Boron does not always obey the octet rule and in fact forms Lewis acids such as BF3 which only has 6 electrons.
Why would a hydrogen attach to chlorine?
Hydrogen has one valence electron. To form a compound, it must follow the octet rule, which states that the total outermost orbital (valence) contains eight electrons. The Chlorine atom contains seven valence electrons. H(1) + Cl(7) = 8 (follows the octet rule)
Does AlCl3 follow octet rule?
no beacuse i dont know
