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http://www.phy.davidson.edu/StuHome/cabell_f/Radial.html r e/pm D - - PowerPoint PPT Presentation

Jan 24, 2023 403 likes •556 views

http://www.phy.davidson.edu/StuHome/cabell_f/Radial.html r e/pm D /(kJ mol 1) Bond r e/pm D /(kJ mol 1) Bond HH 74.130 432.00 CH 112.0 335 HD 74.140 435.39 NH 103.8 310 DD 74.143 439.53 PH 143.3* 340

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http://www.phy.davidson.edu/StuHome/cabell_f/Radial.html

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Bond re/pm D/(kJ · mol−1)Bond re/pmD/(kJ · mol−1) H—H 74.130 432.00 C—H 112.0 335 H—D 74.140 435.39 N—H 103.8 310 D—D 74.143 439.53 P—H 143.3* 340 C—C 131.2 603 O—H 97.1 425 N N 109 76 942 F H 91 7 564 N—N 109.76 942 F—H 91.7 564 P—P 189.3 485 Cl—H 127.5 428 O—O 120.741 493.6 Br—H 140.8 362 S—S 188.7 423 I—H 160.0 295 F—F 141.8* 155 C—N 117.7 745 Cl—Cl 198.8 239 C—O 113.1 1069 Br—Br 228.4 190 N—O 115.02 627 I—I 266 7 147 Cl—F 162 8 247 I I 266.7 147 Cl F 162.8 247

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The difference between an ionic bond and a covalent bond is Q42.1 The difference between an ionic bond and a covalent bond is

  • A. ionic bonds are only found in crystals such as sodium

chloride (NaCl) where there are many atoms in close ( ) y proximity.

  • B. covalent bonds are only found in molecules with three
  • r more atoms.
  • C. ionic bonds are highly directional, while covalent

b d bonds are not.

  • D. ionic bonds involve the transfer of an electron from
  • ne atom to another

hile co alent bonds in ol e

  • ne atom to another, while covalent bonds involve

electrons that spend much of their time between atoms.

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This diagram shows the vibrational Q42.3 and rotational energy levels of a diatomic molecule. Consider two possible transitions for this molecule: possible transitions for this molecule:

  • A. n = 2, l = 5 to n = 1, l = 4

B n = 2 l = 1 to n = 1 l = 0

  • B. n = 2, l = 1 to n = 1, l = 0

The energy change is greater for

  • A. transition A.
  • B. transition B.
  • C. The energy change is the same for both transitions.
  • C. The energy change is the same for both transitions.
  • D. any of the above, depending on circumstances.