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(i) What is the chemical name for MgCl2?

(ii) Why is MgCl2 is named  magnesium chloride and not magnesium dichloride?

      (a) Because MgCl2 is a molecular compound, and molecular compounds 

      (b) Because MgCl2 is an ionic compound, and ionic compounds do not use prefixes in their names.

      (c) Because MgCl2 contains two metals and, therefore, follows different nomenclature rules.

 

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Lesley Mukwada
Lesley MukwadaLv6
5 Nov 2020
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Related questions

The compound is nitrogen trichloride, but is simply aluminum chloride. Why? Choose all that apply.

A. is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom, so is aluminum chloride.

B. is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom, so is nitrogen trichloride.

C. The compound is an ionic compound (metal and nonmetal), and therefore does not require prefixes, so is aluminum chloride.

D. The compound is an ionic compound (metal and nonmetal), and therefore does not require prefixes, so is nitrogen trichloride.

E. None of the above.

The compound NCl3 is nitrogen trichloride, but AlCl3 is simply aluminum chloride. Why? Check all that apply.

  1. The compound NCl3 is an ionic compound (metal and nonmetal), and therefore does not require prefixes
  2. The compound AlCl3 is an ionic compound (metal and nonmetal), and therefore does not require prefixes
  3. AlCl3 is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom
  4. NCl3 is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom
  5. None of the above.

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