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Hydrogen is group 1 family, which is Alkali metals. Therefore, Hydrogen has 1 electron in its outermost shell. This means, it will perform +1 ion when they react. === ===

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14y ago
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16y ago

Hydrogen Atomic number 1 Atomic weight 1 1 Proton 1 electron

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16y ago

Hydrogen only has one electron in it's valence shell.

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13y ago

There is only one electron on the outer shell.

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there is K electrons there is 1 electron

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1

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two

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Q: How many electrons are needed to complete outer shell of hydrogen?
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Related questions

How many electrons are needed to complete hydrogen outer shell?

two


How is hydrogen similar to halogens?

hydrogen is similar to a halogen as its outer most layer of electrons is almost complete.


Why does does oxygen and hydrogen react together?

because they both want to gain full outer shell. They don't have completed outer shells. Hydrogen has one electron in it's outer shell so it wants to ger rid of that by giving it to oxygen. (oxygen itself needs two electrons to get full outer shell which is 8 electrons, so two hydrogens are needed to complete one oxygen atom) and then water is formed.


How many does hydrogen electrons in the outer shells?

Hydrogen has only one valence electrons.


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 in the outer shell does hydrogen ion have?

no electron is present in the outer most shell of hydrogen ion


How many electrons on their outer shell does hydrogen have?

Only one electron for hydrogen.


Does an oxygen atom in a molecule of water have a complete outer energy level?

Yes, as it shares its two unpaired electrons with the two hydrogen atoms.


What is the atomic number of hydrogen and the number of its electrons in the outer shell?

The atomic number for hydrogen (H) is 1, and it has 1 electron in the outer shell.


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 lone pairs has hydrogen sulphide?

A water molecule is made up of two atoms of hydrogen and one atom of oxygen. Oxygen atom has six electrons in its outer most shell and a hydrogen atom has one electron in its outer most shell. Oxygen and hydrogen atoms are unstable because they have less than eight electrons in their outer most shells. Oxygen needs two electrons and hydrogen atom requires one electron tocomplete their valence shell. Oxygen atom combines with two hydrogen atoms by sharingelectrons. The bonds present between hydrogen atoms and oxygen atom are called single covalent bonds. In this way, oxygen and hydrogen atoms complete their outer most orbits. Oxygen shares two electrons with hydrogen atoms but its four electrons remain free in the water molecule. Therefore, there are two electron pairs or four electrons present in a water molecule.


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

Hydrogen can hold only 1 electron.