What is the valence of an atom with three electrons?

Answer 1

Depends.

Valance is used to describe the other "electron shell" of the atom. The Valance shell is the outer most shell and determines how the atom will react chemically with other atoms. For example, H has one electron and one proton, for a neutral charge, and that electron is also the valance electron, as it is in the out shell.

Shells:

Shells are where the electrons are housed, and are divided into energy levels. To find the Max number of electrons on a shell, use the rule 2n^2 where n is the number of the shell (1st, 2nd etc) So the first shell holds two and the 2nd holds 8 etc.

So if we go back to H we see that it has 1 electron when it;s out shell can house a maximum of 2. Therefore it's valance is 1 (worked out by how many electrons are needed to fill the outer shell or need to be dropped to fill the outer shell, which ever number is lower). This means that H is unstable and will react with many things.

So valance can't tell you how many electrons there are, but that's what the atomic number is for.

Answer 2

my guess:

the first valence can only have two

each valence after that follows the octet rule, stating it seeks to have eight. so...

8 + 8 + 2 = 18?

can anyone verify?

Okay your over thinking it I was and then I asked a real smarty pants ha. All it wants is for you to add the total of electrons that could be possible. For me I thought 5 then saw 5 was not there. So you know the first shell has 2 and then the second has 8 and the add the 3 on the valence shell. Sometimes your options just leave you with a number game. Adding up all the possibilities. Your answer will be 13

Answer 3

Well, look at the group(vertical) on a Periodic Table and you'll find group 3A. The group number tells how many valence electrons not how many electrons in an element. So Boron(B) Aluminum(Al) Gallium(Ga) Indium(In) Thallium(Tl) will all have 3 valence electrons. The atomic # tells the total # of electrons in an element.

Answer 4

Since it has only 3 valence electrons, it would like to lose them and attain a stable configuration. So, it has a valence of +3

Answer 5

If your atom is neutal and contains 3 electrons, it must also contain 3 protons making it Lithium. Lithium is in column one of your periodic table, which means it has one valence electron.

Answer 6

13

Answer 7

Aluminum

Answer 8

13