Multiple Choice
When magnesium (Mg^{2+}) and fluorine (F^{-}) combine to form an ionic compound, what is the correct chemical formula for the resulting compound?
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3. Chemical Reactions
Naming Ionic Compounds
Multiple Choice
What is the correct name for the compound with the formula NiI_2?
A
nickel(I) iodide
B
nickel(II) iodide
C
nickel iodate
D
nickel(II) diiodide
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Verified step by step guidance1
Identify the elements in the compound NiI_2: nickel (Ni) and iodine (I).
Determine the charge of the iodide ion (I^-), which is -1.
Since there are two iodide ions, the total negative charge is 2 × (-1) = -2.
To balance the charge, nickel must have a +2 charge, so its oxidation state is +2.
Name the compound using the metal name with its oxidation state in Roman numerals followed by the name of the anion: nickel(II) iodide.
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