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An energy level is the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have. There are no full energy levels in an atom of hydrogen. The first energy level of any atom can hold 2 electrons. Hydrogen only has one electron and it is in the first energy level.

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12y ago
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16y ago

2. the electron configuration would be 1s to the second

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15y ago

There are 18 electrons in the outer shell to make it full There are 18 electrons in the outer shell to make it full

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12y ago

Well, it only has one electron, but to be happy it could borrow or share another electron from another atom, for example oxygen: H2O

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11y ago

Hydrogen has only one electron in its shell.

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11y ago

Well, Hydrogen only has one electron therefore it can only have a first level, which is also the outer level.

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12y ago

Helium has two outer electrons.

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11y ago

One electron.

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Q: How many electrons fill the outer shell in hydrogen?
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Related questions

How many electrons in hydrogen valence shell will give it a noble gas configuration?

Two electrons will fill a hydrogen's outer, or valence, shell.


How many electrons for hydrogen does it take to fill its outer shell?

Hydrogen can hold only 1 electron.


Does helium have a complete outer shell?

Not by itself, no (that is, hydrogen is not a noble gas). A neutral hydrogen atom starts out with 1 electron, but it needs 2 electrons to fill its shell. Therefore, a hydrogen atom will often form 1 covalent bond with another atom, in order to gain that 1 extra electron it needs to fill its shell. Important note: Most elements need 8 electrons to get a full shell, but hydrogen is the exception: it only needs 2 electrons to get a full shell.


How many electrons does hydrogen have to fill its outer shell?

Hydrogen has one electron. Its outer shell the first energy level has just one orbital, 1s which could hold a maximum of 2 electrons, so hydrogen only partially fills the level.


How many electrons are needed to fill carbon outer shell?

Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.


How many electrons fill the outer shell of helium?

There is only one electron inhabiting hydrogen and the compound therefore only has one shell, effectively making that shell the outer shell. TL;DR There is 1 electron in the outer shell of hydrogen.


How many electrons does nitrogen require to fill its outer shell?

Its atomic number is 7, and so it needs a further 3 electrons to fill its outer shell.


What two atoms will have their outer energy level filled with two electrons?

Hydrogen and Helium both only need two valence electrons to fill their outer shell.


How many valence electrons will beryllium gain or lose to fill its outer shell?

Beryllium will lose 2 electrons to satisfy the octet rule (to fill its outer shell).


If carbon has four electrons in its outer shell does it completely fill its outer selectron shell?

Yes. Two of the electrons will go into the carbon's outer s shell (2s) to completely fill it (s orbitals can contain up to two electrons) and the remaining two will go into its outer p shell (2p).


How many number of electrons to fill the outer shell of carbon?

Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.


How many electrons would be needed to fill its outer shell for carbon?

4 to fill the 2p shell