#1
Which of the following is the formula for the nitrate ion?
NO3-
ExplanationNitrate ion has one nitrogen atom and three oxygen atoms with a single negative charge.
#2
What is the chemical formula for the carbonate ion?
CO3^2-
ExplanationCarbonate ion consists of one carbon atom and three oxygen atoms with a double negative charge.
#3
What is the formula for the hydroxide ion?
OH-
ExplanationHydroxide ion comprises one oxygen atom and one hydrogen atom with a single negative charge.
#4
Which of the following is the chemical formula for the sulfate ion?
SO4^2-
ExplanationSulfate ion contains one sulfur atom and four oxygen atoms with a double negative charge.
#5
Which of the following is the formula for the phosphate ion?
PO4^3-
ExplanationPhosphate ion comprises one phosphorus atom and four oxygen atoms with a triple negative charge.
#6
What is the chemical formula for the cyanide ion?
CN-
ExplanationCyanide ion consists of one carbon atom and one nitrogen atom with a single negative charge.
#7
What is the chemical formula for the permanganate ion?
MnO4-
ExplanationPermanganate ion comprises one manganese atom and four oxygen atoms with a single negative charge.
#8
What is the chemical formula for the ammonium ion?
NH4+
ExplanationAmmonium ion consists of one nitrogen atom and four hydrogen atoms with a single positive charge.
#9
Which of the following is the formula for the chromate ion?
Cr2O7^2-
ExplanationChromate ion contains two chromium atoms and seven oxygen atoms with a double negative charge.
#10
What is the chemical formula for the hydrogen carbonate ion?
HCO3-
ExplanationHydrogen carbonate ion comprises one hydrogen atom, one carbon atom, and three oxygen atoms with a single negative charge.
#11
Which of the following is the formula for the acetate ion?
CH3COO-
ExplanationAcetate ion consists of two carbon atoms, three hydrogen atoms, and two oxygen atoms with a single negative charge.
#12
What is the chemical formula for the bisulfate ion?
HSO4-
ExplanationBisulfate ion consists of one hydrogen atom, one sulfur atom, and four oxygen atoms with a single negative charge.