Exam 4 Study Guide

Exam 4 Study Guide - 1.879 29 2 M + X 2 2MX Table 8.3...

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frequency = (3.00x10 8 m/s) / wavelength Energy = (6.626x10-34 J•s)( 3.00x108 m/s) / wavelength or (6.626x10-34 J•s) x frequency Wavelength = (6.626x10-34 J•s) / (9.11x10-31kg) x velocity ΔE = -2.18x10-18J (1/n f 2 – 1/n i 2 ) As the Principal Quantum Number (n) increases, the energy levels become closer. n = x l = 0 to x-1 m l = -1 to + l m s = ±½ # of orbital = x 2 s orbital (l = 0) p orbital (l = 1) d orbital(l = 2) f orbital (l = 3) Z eff (Effective nuclear) = Z (Actual Nuclear Charge) – S (Charge screened by other electrons)
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Table 8.2 Properties of the Alkali Metals Element Electron Configuration Atomic Radius (pm) IE 1 (kJ/mol) Density at 25°C (g/cm 3 ) Melting Point (°C) Li [He] 2s 1 152 520 0.535 181 Na [Ne] 3s 1 186 496 0.968 102 K [Ar] 4s 1 227 419 0.856 98 Rb [Kr] 5s 1 248 403 1.532 39 Cs [Xe] 6s 1 265 376
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Unformatted text preview: 1.879 29 2 M + X 2 2MX Table 8.3 Properties of the Halogens Element Electron Atomic IE 1 (kJ/mol) Melting Point Boiling Point Density of Liquid Configuration Radius(pm) (C) (C) (g/cm 3 ) F [He] 2s 2 2p 5 72-328-219-188 1.51 Cl [Ne] 3s 2 2p 5 99-349-101-34 2.03 Br [Ar] 4s 2 2p 5 114-325-7 59 3.19 I [Kr] 5s 2 2p 5 133-295 114 184 3.96 2 M + n X 2 2MX n Table 8.4 Properties of the Noble Gases Element Electron Configuration Atomic Radius(pm) IE 1 (kJ/mol) Boiling Point (K) Density of Gas (g/L at STP) He 1s 2 32 2372 4.2 0.18 Ne [He] 2s 2 2p 6 70 2081 27.1 0.90 Ar [Ne] 3s 2 3p 6 98 1521 87.3 1.78 Kr [Ar] 4s 2 4p 6 112 1351 119.9 3.74 Xe [Kr] 5s 2 5p 6 130 1170 165.1 5.86...
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This note was uploaded on 02/15/2011 for the course CHEM 141 taught by Professor Milner,e during the Fall '08 term at Jackson State.

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Exam 4 Study Guide - 1.879 29 2 M + X 2 2MX Table 8.3...

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