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He has 2 valence electrons. Look on a Periodic Table. It will show He only has 2 protons and the number of protons and electrons is equal. It is an exception to the rule of group numbers corresponding to valence numbers.
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What is the number of valence electrons the element helium has?
Helium has 2 electrons (total of 2 electrons and 2 valence electrons)
What is the number of valency electron in helium?
Helium has two valence electrons.
What is heliums number of valence electrons?
Helium has 2 valence electrons. Being in Group 18 of the periodic table, helium is a noble gas and has a full outer electron shell.
How many valence electrons are in an atom of helium?
helium has 2 electrons as its atomic number is 2
What is the valence of the element helium?
The valence of the element helium is 0.
Do Aluminum has the greatest number of valence electrons?
Far from it. Aluminum has 3 valence electrons. The highest number is 8, which the noble gases other than helium have (helium has only 2). Metals can have 1, 2, or 3 valence electrons, so aluminum has the greatest number that an element can have if it is a metal. Once you get to 4 valence electrons (which the element carbon has) you are in the nonmetal range.
How many valance electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
How valence electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
How many valence electrons does He have?
Helium has 8 valence electrons. It is a noble gas. none = 0
What is the number of valence electron for the elements in Group 8A?
Eight, except for helium which has two.
Why do neon and helium have different number of dot in their Lewis structures if they are in the same group?
Neon and helium have different number of valence electrons, which determine the number of dots in their Lewis structures. Helium has 2 valence electrons and will have 2 dots in its Lewis structure, while neon has 8 valence electrons and will have 8 dots in its Lewis structure, following the octet rule.
How to determine the number of valence electrons in an atom?
To determine the number of valence electrons in an atom, look at the group number on the periodic table. The group number indicates the number of valence electrons. For example, elements in group 1 have 1 valence electron, while elements in group 18 have 8 valence electrons (except for helium, which has 2).
