CHEM 121 Midterm: CHEM 121 Midterm 2 2006 V2
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____: a sigma bond is weaker than a pi bond, an atom with 19 electrons contains an occupied 3d orbital, valence electrons share a common principal quantum number. Unless otherwise stated, show all your reasoning/work for full marks (3) 1) answer the following statements as true (t) or false (f). No explanation required (ner). (2) 2) consider any stable atomic ions (+ or charged!) with a z less than 35 and fill in the blanks. Pauling"s electronegativity scale: h = 2. 1, li = 1. 0, c = 2. 5, o = 3. 5 se = 2. 4. (2) 6) arrange the following atoms in order of increasing electropositivities. Os (3) 7) a new element has been found on the planet magrathea and is given the symbol ma. Molecular geometry name hybridization polar molecule? (y or n) (6) 8) complete the following table. The hybridization column refers to the central atom only. (3) 9) an electron moves from n = 2 to another energy level.
