2007-11-11 05:08:10 · 5 answers · asked by Where Are You Summer?! 3 in Science & Mathematics ➔ Chemistry
using a periodic table
2007-11-11 05:15:24 · update #1
I'm assuming you want to find out how many valence electrons an element has?
If so, on the periodic table, groups 1 and 2 have 1 and 2 valence electrons respectively. Groups 13-18 each have their group number minus ten amount of valence electrons. Groups 3-12 have mostly 2 valence electrons with a few exception, such as Chromium and Copper have only 1 valence electron and palladium has no valence electrons.
2007-11-11 05:18:14 · answer #1 · answered by Pig 6 · 0⤊ 0⤋
Valence electrons are the ones available to interact or be transferred in chemical bonding.
Look at the electron configuration of the atoms of an element. All the electrons beyond the preceding noble gas are valence electrons.
2007-11-11 05:19:32 · answer #2 · answered by Facts Matter 7 · 0⤊ 1⤋
whichever group an element is in (ex: hydrogen is in group 1, neon is in group 8), that's how many valence electrons it has.
2007-11-11 06:16:16 · answer #3 · answered by wrooney97 2 · 1⤊ 1⤋
by looking at the column (group) the element is in.
2007-11-11 05:27:38 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Could you elaborate?
If not: use a really good magnifying glass.
2007-11-11 05:11:25 · answer #5 · answered by Anonymous · 1⤊ 1⤋