Valence electrons?

2 ⤊

What number of valence electrons are indicated by these electrons configurations?
a) 1s^2 2s^2 2p^6 3s^2 3p^1

2006-12-18 09:07:09 · 5 answers · asked by Stephanie 3 in Science & Mathematics ➔ Chemistry

it's Aluminum and has 3 valence electrons.

2006-12-18 09:15:49 · answer #1 · answered by keda 3 · 0⤊ 0⤋

3
2 in the 3s and 1 in the 3p

2006-12-18 09:07:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋

3 valence elctron because you have 3 electrons in highest energy level

2006-12-18 09:09:14 · answer #3 · answered by ibrar 4 · 0⤊ 0⤋

3 valence electrons are there start counting from the s orbital 3th period

2006-12-18 09:09:07 · answer #4 · answered by curious 3 · 0⤊ 0⤋

I dont know, i HATE those things. why do they have to exist..just to piss me off, i swear

2006-12-18 09:08:59 · answer #5 · answered by sobrien 6 · 2⤊ 0⤋