lewisstructures

lewisstructures - drawing Lewis structures - valence...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: drawing Lewis structures - valence electrons - electrons involved in chemical bonding dots placed on 4 sides of chemical symbol number of valence electrons in representative elements same as group number add all valence electrons o same # as group # for representative elements o add electron for each negative charge in anions o subtract electron for each positive charge in cations o only keep track of total number of electrons (no need to associate electrons to certain atoms) write symbols for atoms o central atom usually the least electronegative o single bond (2 shared electrons) represented by dash between atomic symbols complete octets of atoms o arrange dots so all atoms have 8 electrons o hydrogen only needs 2 in outer shell place extra electrons around central atom o even if it adds up to more than 8 use multiple bonds if not enough electrons o use unshared electron pairs to make double/triple bonds formal charge - charge of an atom if all atoms had the same electronegativity...
View Full Document

Page1 / 2

lewisstructures - drawing Lewis structures - valence...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online