2
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
3 valence electrons
Lead has 4 valence electrons.
Arsenic has 5 [valence electrons] in them.
Valence electrons are the total amount of electrons on the outermost shell of an atom. Meaning if the last shell has two, the valence electrons are two. But a complete valence shell would hold eight.
Iron (Fe) is in group 8 on the Periodic Table and it does not have 8 valence electrons. Iron has 2 valence electrons in its 4s orbital and 6 valence electrons in its 3d orbital, making a total of 8 valence electrons.
Iron has electron structure [Ar]4s23d6 and thus has 8 valence electrons in theory. For all practical purposes though, Iron shows a maximum valence of 6.
Iron is in period 4 and column 8 of the periodic table because it has 8 total electrons in its outermost energy level, considering both valence and core electrons. The 3 valence electrons are in the 4s and 3d orbitals, which leads to its position in column 8.
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
5 valence electrons.
3 valence electrons
Beryllium has two valence electrons.
There are 3 valence electrons in an atom of aluminium.