Determine which kind of molecular orbitals are formed when the following atomic orbitals are combined with each other.

• A. a. π* anti-bonding molecular orbital
  b. σ bonding molecular orbital
• B. a. σ* anti-bonding molecular orbital
  b. σ bonding molecular orbital
• C. a. σ* anti-bonding molecular orbital
  b. π bonding molecular orbital
• D. a. π* anti-bonding molecular orbital
  b. π bonding molecular orbital

Answer: (B)