1. Multiple Choice (2 pts each, 10 pts) 1. Shown is the structure of 1,3-butadiene, a chemical used to make plastics. How many sigma (0) and pi (Tl) bonds are present in 1,3-butadiene? H H H A. 7 o bonds, 2 nt bonds B. 2 o bonds, 7 r bonds C. 9 o bonds, 2 n bonds D. 11 o bonds, 2 n bonds 2. Which of the following is FALSE regarding Valence Bond Theory (VBT)? A. The formation of a covalent bond arises from the overlap of atomic orbitals. B. Bond strength increases as the distance between atoms decreases indefinitely C. Hybrid orbitals differ in shape as the atomic orbitals they are mixed from. D. The total number of hybrid orbitals formed equals the sum of all atomic orbitals in a molecule. 3. Using the valence-bond model, what electron-group geometry is denoted by an sp hybridization? A. Linear B. Trigonal planar C. Trigonal pyramidal D. Tetrahedral