Helium has 2 valence electrons.
Helium has two valence electrons
Yes. Valence electrons are the electrons found in the outermost shell / energy level
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.
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.
Valence electrons are found in the outermost energy level of an atom, also known as the highest principal energy level. These are the electrons involved in chemical bonding and determining the reactivity of an element.
Helium has two valence electrons
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.
Helium has 2 valence electrons, and it's the only noble gas that doesn't have 8 valence electrons.
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
Yes. Valence electrons are the electrons found in the outermost shell / energy level
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.
The electrons in the outermost shell is called as valence electron. These electrons are free and they are involved in bonding reactions.
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.
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.
group #
valence electrons are the electrons found in the outermost energy level of bohr diagram for an element.
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.