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Helium has 2 valence electrons.

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12y ago

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How many valance electrons are found in a atom of each what elements Helium?

Helium has two valence electrons


The number of valence electrons found in an atom of Group A element is equal to?

If by group A u mean Group 1, that would be one. Except for the transition metals, the # of valence electrons is equal to the one's place of the group #, except for helium because it can only have 2 and it is in the 8 group, but that is the group that has the most it can have.


How many valence electrons would be found in an atom of hellium?

Helium has 2 valence electrons, and it's the only noble gas that doesn't have 8 valence electrons.


What is the number of the prinicpal energy level in which valence electrons are found?

The valence electrons are the outer most electrons and the principal energy level in which they belong will vary for element to element and generally corresponds to the period number in which the element is present


Are the valence electrons the outermost electrons?

Yes. Valence electrons are the electrons found in the outermost shell / energy level


Noble gas with two electrons?

Helium... that's what i found in chemicalelements.com ... but on my science homework (Crossword) it doesnt fit because of the L in Chlorine. :/ Helium is a noble gas with 2 electrons. (Respond to earlier message:) I have the same science homework, and if it still helps, 18 down is Fluorine, not Chlorine. And 20 across is Helium.


What are electrons found in an atoms outer shell called what?

The electrons in the outermost shell is called as valence electron. These electrons are free and they are involved in bonding reactions.


Do all noble gases have eight valence electrons?

Yes, except for helium which only two electrons. All noble gases are found under the noble gas family to the far right of the periodic table.


What are valence electrons and where can they be found?

Valence electrons are the outermost electrons in an atom that participate in chemical bonding. They are found in the highest energy level (shell) of an atom. The number of valence electrons can determine an element's reactivity and the types of chemical bonds it can form.


Number of valence electrons found in an atom of a group A element is equal to what?

group #


Valence electrons in a sentence?

valence electrons are the electrons found in the outermost energy level of bohr diagram for an element.


What element contains 7 valence electrons and 7 protons?

You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.