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Unformatted text preview: Arrange the following two sets of compounds in order of decreasing melting point NaCl, MgS, AlP Sorry no answer. remember charge and size. 17) An atom of 14 N 3- contains a. 10 electrons, 7 protons, 7 neutrons b. 7 electrons, 4 protons, 10 neutrons c. 4 electrons, 7 protons, 7 neutrons d. 14 electrons, 11 protons, 7 neutrons e. 2. Consider the following molecule: H-O-C C-O-H a) Which bonds in the molecule are polar, and which are non polar? Explain . b) Which bond is most polar? Explain. c) Indicate, using for partial charges and arrows for the dipole moments, the polarity of each bond. 7. What is the formal unit (empirical formula) of the following ionic compound? Justify your answer. 9) In the following pairs which atom or ion is LARGER (Ne or Xe) (Ni or Ni2+) (O or O2-) ( P or O) a) Ne, Ni, O, P b) Xe, Ni, O 2- , P c) Xe, Ni, O 2- ,O d) Ne, Ni 2+ , O 2- , P from an old exam........
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