2006-10-21 23:13:18 · 4 answers · asked by horensen 4 in Science & Mathematics ➔ Chemistry
If the elements are in the same period, they must have the same number of electron shells.
E.g. Lithium has electronic configuration [2.1], while fluorine has electronic configuration [2.7].
They are both in Period 2 as they both had 2 electron shells.
I am unaware of other similarities 2 different elements may have, unless you know the identities, then that may help.
Differences could possibly be the different number of electrons in their most outer shell.
In the above example, lithium is in Group I, hence it has 1 electron in its most outer shell.
Fluorine is in Group VII, hence it has 7 electrons in its most outer shell.
Any other differences may be easier to surface, if you know specifically which 2 elements you are supposed to be comparing and not just generally any 2.
2006-10-23 19:08:18 · answer #1 · answered by chyrellos 2 · 1⤊ 0⤋
There is hardly any similarities for 2 elements in the same period, by they do have very different chemical properties. The only similarity I can think of concerning these elements are that they have an equal number of electron shells.
It is the elements in the same group that have similar chemical properties in that they undergo similar chemical reactions. Their physical properties change gradually as going down a group.
2006-10-22 06:18:31 · answer #2 · answered by CaiZ.StarGazer 2 · 2⤊ 0⤋
the valance might be same, and there are a lot of diferences
2006-10-22 06:27:35 · answer #3 · answered by Papilio paris 5 · 0⤊ 2⤋
D-they have different amount of p+
S-isotopes...probably...
2006-10-22 07:10:17 · answer #4 · answered by BeCKy 1 · 1⤊ 1⤋