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What atoms need only 2 valence electrons to have a filled out level?
Helium.
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium atoms only need 2 valence electrons to have a filled outermost energy level because helium is in the first period of the periodic table and its outermost energy level can only hold a maximum of 2 electrons.
How many valence electrons do atoms in period 1 have?
Hydrogen has 1 valence electron, whereas helium has 2 valence electrons.
What kind of bonds do helium atoms form?
helium has completely filled valence electrons. hence it are stable, chemically inert and do not form compounds.
What are the valence electron for helium?
Both of the two electrons in a helium atom are technically "valence electrons", but since they constitute a complete electronic shell, they do not form chemical bonds to other atoms easily if at all.
What is the valence of the element helium?
The valence of the element helium is 0.
Which has the least number of atoms 5g of hydrogen or 10g of helium?
10g of helium has fewer atoms. This is because the atomic mass of helium is much higher than that of hydrogen, so the same mass of helium contains fewer atoms than the same mass of hydrogen.
What element have the same valence electrons as neon?
Argon(Ar) and Helium(He)
What is the number of valence electrons the element helium has?
Helium has 2 electrons (total of 2 electrons and 2 valence electrons)
Atoms of element that are in the same group have the same number of?
valence electrons
Why do atoms with the same number of valence of electrons have similar chemical properties?
Because atoms with the same number of valence electrons react in similar ways with other elements.
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.
