Peroidic table question-real easy...?

Question

Since lithium is in period two does that mean it has 2 outer electrons, if not wat does period two mean and also what would group one mean for an element????thanks-

Answer 1

First of all, what you have confused are the terms group and period. Groups are the vertical columns on the periodic table and Periods are the horizontal rows. To be in period two means that the element has a full S level. The S level holds two electrons. With Hydrogen having one and Helium having two electrons in the S level. When you move up to the second period. These elements all have a full S level, but as you move to the right you are counting the number of electrons that they have in the P level. The P level holds eight electrons.
So for Lithium being in period two simply means that it has one electron in the P level and two in the S level.
As to what being in group one means, thats the other way. This is what you were originally referring to. Being in group one of the periodic table means you have one valence electron.

Answer 2

Lithium has only one valence(outer) electrons.
Period 2 just means that the element is listed in the second row of the table from top to bottom. Group 1 means that the element is in the first column of the table from left to right. Group 1 elements are known as alkali metals( Na, K, Rb, Cs, Fr).

Answer 3

Though in group 1, lithium also exhibits properties of the alkaline-Earth metals in group 2. Like all alkali metals, it has a single valence electron, and will readily lose this electron to become a positive ion. Because of this, lithium reacts easily with water and does not occur as the free element on Earth. Nevertheless, it is less reactive than the chemically similar sodium(Na).

Electrons per shell- 2,1

http://en.wikipedia.org/wiki/Lithium

Answer 4

the period an element is in does nothing to determine the number of valence (outer) electrons it has. It is simply use to group elements with similiarities in properties together. The group that an element is in does determine the number of valence electrons, and Lithium is in group 1 so it has 1 valence electron

Answer 5

Li is in group 1 meaning it has 1 outer electron. period 2 mean it has 2 shells. 2 electrons in the 1st & 1 in the 2nd.

Answer 6

Yes, in a way.

the periodic table is broken up into 2 major groups.

I , II the transition metals and III-VIII This is because all of the transition metals have various ammounts of valence electrons. to get the straight electron ammounts, you have to take out the transition metals and combine I, II, and XIII-XVIII. (those are the periods.)

The answer to your question is no, the periods are alittle more complicated then that but yes, lithium has 2 electrons in its outer electron layer.

Answer 7

No, it refers to the number of protons in the atoms nucleus.
Like hydrogen is the first on the chart, though I am not sure where Lithium is but you say two, if so it has two protons in its nucleus. But if memory serves me, helium is number 2 in the chart and has 2 protons in its nucleus.Hydrogen always has only one proton. Don't confuse neutrons in the nucleus with protons, Common hydrogen has one proton only and no neutrons, yet other hydrogen atoms containing neutrons are varied isotopes, such as deuterium and tritium. The real determining factor that makes them all hydrogen is the single count proton. It is the number of protons and element has that determine it as that element.
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Answer 8

actually, lithium is on period one. on period one, the elements have one electron on the outer layer. it is also on group two, but doesn't mean anything.

Answer 9

It has one because its in the first Group. Period increases the number of circles around the atom. Period is up and down, group is across.

Answer 10

no it doesn't, that only works for groups, so it has one valence electron. Although this trick only works for the first two groups, then the thirteenth-eighteenth.