ocr: ch 112 final 1987 page 4 20. An aton Ina 4f orbital has quantun nunbers n and 1, respectively (a) 3.4 (b) 4,4 (c) 4,3 (d) 4,5 21. Which rule is not used In determining electronle configurations: Helsenberg principle (c) Hund's rule (b) Pauli principle (d) Aufbqu principle 22. As Indicated by the Lewls structures, whlch of the following specles could probably not exist a5 a stable molecula? (a) NH, (b) "2"2 (e) ",". (d) N,"6 23. The shape of the '3 ion is probably; (a) trigonal planar (c) bent (b IInear none of these 24. Mhich of the Following does not have a dipole moment? (a) HCI (b) co (c) M ...
