Problem Set 1 2011

# Problem Set 1 2011 - a = 52.8 pm At what value of r does...

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CHM 241 Spring 2011 Problem Set 1 Due Friday, Jan 21 A. Sketch 2p(y) and 3d(x 2 -y 2 ) orbitals of the hydrogen atom on a set of Cartesian axes and properly shade each lobe. Identify the nodal planes. B. Write a set of quantum numbers for the valence electrons of the arsenic atom. C. The mnemonic device shown below is useful for building up electronic configurations of atoms up to a certain atomic number. What is the last atom for which it is possible to derive the ground electronic configuration from orbitals/shells explicitly listed? Name all orbitals listed in the diagram that have non-zero amplitude at the nucleus (r = 0). 4f 4d 4p 4s 3d 3p 3s 2p 2s 1s D. The radial component of the 2p z wave function of the hydrogen atom appears below. R 21 (r) = 2 -1 6 -1/2 a 0 -5/2 r exp(-r/(2a 0 ))
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Unformatted text preview: a = 52.8 pm At what value of r does the function 4πr 2 R 2 21 (r) have its maximum? E. Identify the atom (or ion) that has the indicated property or write the electronic configuration of the atom listed, whichever applies. i. [He]2s 2 2p 6 3s 2 3p 6 3d 10 (+2 ion) ii. Hf 4+ iii. Identify the ion X-that is isoelectronic with the potassium ion and forms a stable salt KX. G. The photoelectron spectrum of Ne(g) reveals that two ionizations occur in the range of 20 - 30 eV, and that a third occurs at much higher energy. Rationalize the spectrum. hν (X-Ray) + Ne(g) → Ne + (g) + e-(with excess energy) H. Radiation with a wavelength of 58.4 nm interacts with a hydrogen atom and induces the ejection of an electron. What is the kinetic energy of the departing electron in eV?...
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## This note was uploaded on 03/20/2012 for the course CHM 24100 taught by Professor Professordavidr.mcmillin during the Spring '10 term at Purdue.

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