Multiple Choice
Which of the following is the correct chemical formula for chromium(II) chloride?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for titanium(II) oxide?
A
Ti_2O
B
Ti_2O_3
C
TiO
D
TiO_2
Verified step by step guidance1
Identify the oxidation state of titanium in titanium(II) oxide. The Roman numeral II indicates that titanium has a +2 charge (Ti^{2+}).
Recognize that oxide ion (O) typically has a charge of -2 (O^{2-}).
To write the correct formula, balance the total positive and negative charges so the compound is electrically neutral.
Since Ti^{2+} and O^{2-} have charges of equal magnitude but opposite sign, they combine in a 1:1 ratio.
Therefore, the correct chemical formula is TiO, representing one titanium ion and one oxide ion.
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