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What is a element that has many valence electrons?
inert gases
How many valance electrons are there in helium?
none its innert Being inert does not mean you don't have valence electrons. Helium has two valence electrons, both in a 1s orbital.
How many valance electrons in Co?
There are 27 valance electrons.
How many valance electrons does samarium have?
2 valance electrons
How Many valencevelecrtons do the inert noble gases have?
8 valence electrons. except for helium which has 2 valence electrons
How many valance electrons are in iodine?
Iodine has 7 valance electrons
How many valence electrons do noble gases have?
Inert gases have 8 valence electrons. This is why they are inert, they have a complete octet formed of electrons and are in their lowest energy configuration.
How many elements within a row different?
They have different numbers of valance electrons
How many valance electrons does selenium have?
6 valence electrons
How many valance electrons oxygen have?
6 valence electrons
How many valence electrns in halogens?
The halogens, or inert gases, have full outer shells. Helium has 2 valence electrons in its outermost shell, and the other inert gases have eight. Wikipedia has a good entry on this: http://en.wikipedia.org/wiki/Valence_electron
How many valance electrons are in mercury?
there are six
