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# How many valence electrons are in aluminum?

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• How many valence electrons are in aluminum?
• ### How many valence electrons are in aluminum?

mepehuxit > 05-08-2018, 06:16 AM

Number of electrons present in the valence shell of an atom or number of protons present in the nucleus of an atom is known as atomic number of an element.
Aluminium is placed in 3rd A group of the periodic table. Thus group number indicates number of electrons present in the valence shell.
Secondly,atomic number of aluminium is 13,hence it’s electronic configuration can be written as ,2,8,3.
Aluminium is metal qhich shows +3 oxidation state in it’s compounds.

There is a trick, using the periodic table of elements, to figuring out how many valence electrons each atom has. The number of valence electrons = the column number (group number). Carbon is in group four, so it has four valence elections, for example. Only works for Groups 1 - 8 of the Main groups.
• ### RE: How many valence electrons are in aluminum?

ircasodle > 05-08-2018, 06:16 AM

It depends on how much aluminium you have. (And yes that is the official name, can’t help it.)
In 23 grams of Al you’d have about 1.8 x 10^24 of them. That being 3 times the number of Avogadro.
And they would all be in energy states that span the chunk of Al you have. In an incompletely filled band. That would make for pretty strong metallic bonding, which makes that chunk strong enough to make a soda can out of. It would also make for a pretty good conductor of both heat and electricity.
Unfortunately, all those electrons could easily be stolen by the oxygen molecules of the air and an oxide could be formed. But luckily this only happens to the very top layer of your can: there is a very thin oxide layer that blocks any further oxidation. Without that your soda can would burst out in flames