Chemical Bonding - Covalent Non-Metals: Multiple Covalent Bond

Question 1

covalent bonding

Answer 1

• the “sharing” of a pair of e-s by two atoms
• the only other choice is to share them
• happens when two non-metals form a bond
• they may share many pairs of electrons, forming more than a single bond

Question 2

why share to bond?

Answer 2

• since the non-metals have similar electron affinities, they cannot take electrons from one another; sharing allows a noble gas configuration to be achieved by both atoms
• octet and duet rules

Question 3

sharing electrons

Answer 3

• shared electrons = needed electrons - available electrons

Question 4

multiple bond - sigma and pi bond

Answer 4

• sigma bond - the bond that forms directly between two atoms
• s-s orbital overlap
• s-p orbital (end overlap)
• p-p orbital (end to end)
• pi bond - forms from side to side overlap of p orbitals

Question 5

group VIA or 16 - multiple bonds

Answer 5

• consider outer valence electrons are all 6
• need two more electrons
• can be two bonds to same atom (double bond) results in two shared pairs

Question 6

group IVA or 14 - multiple bonds

Answer 6

• DO NOT FORM QUADRUPLE BONDS

- geometrically impossible