Multiple Choice
What is the correct name for the compound with the formula NH4Cl?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for manganese(II) chloride?
A
MnCl2
B
MgCl2
C
Mn2Cl
D
MnCl3
Verified step by step guidance1
Identify the oxidation state of manganese in manganese(II) chloride. The Roman numeral II indicates that manganese has a +2 charge, written as Mn^{2+}.
Determine the charge of the chloride ion. Chloride is a halide ion with a charge of -1, written as Cl^{-}.
Balance the total positive and negative charges to form a neutral compound. Since manganese has a +2 charge and chloride has a -1 charge, you need two chloride ions to balance one manganese ion.
Write the chemical formula by combining one Mn^{2+} ion with two Cl^{-} ions, resulting in MnCl_{2}.
Verify that the formula is electrically neutral by confirming that the total positive charge (+2) equals the total negative charge (2 × -1 = -2).
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