Quiz 1 - Bonding Theories | Bonding Theories
General Chemistry 1 - Quiz 1 - Bonding Theories
The double bond of an alkene is composed of:
Double bond: 1 σ + 1 π bond
Which of the following statements about σ molecular orbital is incorrect?
What type of hybrid orbitals are involved in bonding of CO2?
2 electron groups around the central carbon atom (2 neighboring atoms + 0 lone pair) ⇒ sp hybridization
What type of hybrid orbitals are involved in bonding of ClO3-?
4 electron groups around the central chlorine atom (3 neighboring atoms + 1 lone pair) ⇒ sp3 hybridization
Which of the following statements is incorrect?
2 overlapping atomic orbitals form 1 bonding MO and 1 antibonding MO
What is the number of unpaired electrons in the B2 molecule?
electronic configuration of B (Z = 5): 1s2 2s2 2p1
electronic configuration of B2: (σ1s)2 (σ*1s)2 (σ2s)2 (σ*2s)2 (π2py) (π2pz) ⇒ 2 unpaired electrons
Which of the following best describes the nature of molecular orbitals?
Molecular orbitals (MOs) are formed by the linear combination of atomic orbitals (AOs) and are delocalized over the entire molecule.
In a molecular orbital diagram for N2, which molecular orbital is filled last?
In the molecular orbital diagram for N2, the σ2p orbital is the highest energy bonding molecular orbital and is filled last.
For the molecule CO, which atomic orbitals will primarily contribute to the bonding molecular orbital of the highest energy?
In CO, the bonding molecular orbitals of the highest energy primarily result from the overlap of the C 2p and O 2p atomic orbitals.
Determine the bond order for the molecule C2.
C2 has 8 bonding electrons (2 in σ1s, 2 in σ2s, 4 in π2p) and 4 antibonding electrons (2 in σ*1s, 2 in σ*2s). Thus, C2 has a bond order of 2, calculated by the formula: (Number of bonding electrons - Number of antibonding electrons) / 2, resulting in (8 - 4) / 2 = 2.