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Assignment help 6476


  •  +104.7 kJ/mol
  •  -104.7 kJ/mol
  •  -4190.7 kJ/mol
  • -2043.0 kJ/mol
  •  +1407.7 kJ/mol


Place the following atoms in order of increasing atomic radii: K, Na, Be, and Li?

  •  Li < Na < K < Be
  •  Be < K < Na < Li
  •  Be < Li < Na < K
  •  K < Na < Li < Be
  •  Li < Be < Na < K

3- The central atom in the triiodide ion, I3-, is surrounded by

  •  one single bond, one double bond, and one lone pair of electrons.
  •  two single bonds and no lone pairs of electrons.
  •  two double bonds and one lone pair of electrons.
  •  two single bonds and two lone pairs of electrons.
  •  two single bonds and three lone pairs of electrons.


The ____ of a photon of light is ____ proportional to its frequency and ____ proportional to its wavelength.

  • energy, directly, inversely
  •  velocity, directly, inversely
  •  amplitude, directly, inversely
  •  intensity, inversely, directly
  • energy, inversely, directly


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