Chem Placement Exam Questions

Chem Placement Exam Questions - -Which of the following is...

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-Which of the following is an excited state of Boron? a) 1s2s2p 3 b) 1s 2 2s 2 3d c) 1s 2 2s2p 2 d) a,b e) a,b,c -List the following elements in order from lower first ionization energy to highest: K, Na, Al, N -Why is the electron affinity of Li higher even though it has a smaller charge than Be? -What is the geometry and dipole of CO 2- Trigonal planar, trigonal pyramidal, non-zero dipole movement -How many pi bonds are in H 2 N—CH 2 – COOH a) 0 b) 1/2 c) 1 d) 2 e) need more info -This is the molecular energy level of Li 2 What is the bond order and is Li 2 stable? -Using 2s and 2p orbitals of the Carbon atom, sp 2 orbital is constructed. Which is true? a) The resulting orbital includes 3 equivalent orbitals arranged in a plane with 120° angle between b) Orbitals described in a have energy higher than energy of 2s orbital and lower energy than 2p orbital c) Resulting orbital has one orbital in addition to those described in a, and has node in plane of orbitals described in a d) a,b e) a,b,c
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This note was uploaded on 11/03/2011 for the course MATH 1090 taught by Professor Greenwood during the Spring '08 term at MIT.

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Chem Placement Exam Questions - -Which of the following is...

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