#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
Which of the following is the formula for the oxalate ion?
C2O4^2-
ExplanationOxalate ion contains two carbon atoms and four oxygen atoms with a double negative charge.
#9
What is the chemical formula for the hypochlorite ion?
ClO-
ExplanationHypochlorite ion consists of one chlorine atom and one oxygen atom with a single negative charge.
#10
Which of the following is the formula for the perchlorate ion?
ClO4-
ExplanationPerchlorate ion contains one chlorine atom and four oxygen atoms with a single negative charge.
#11
What is the chemical formula for the chlorate ion?
ClO3-
ExplanationChlorate ion comprises one chlorine atom and three oxygen atoms with a single negative charge.
#12
Which of the following is the formula for the chlorite ion?
ClO2-
ExplanationChlorite ion contains one chlorine atom and two oxygen atoms with a single negative charge.
#13
What is the chemical formula for the chromate ion?
CrO4^2-
ExplanationChromate ion contains one chromium atom and four oxygen atoms with a double negative charge.
#14
What is the chemical formula for the sulfate ion?
SO4^2-
ExplanationSulfate ion comprises one sulfur atom and four oxygen atoms with a double negative charge.
#15
Which of the following is the formula for the sulfite ion?
SO3^2-
ExplanationSulfite ion contains one sulfur atom and three oxygen atoms with a double negative charge.
#16
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.
#17
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.
#18
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.
#19
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.
#20
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.
#21
Which of the following is the formula for the dichromate ion?
Cr2O7^2-
ExplanationDichromate ion contains two chromium atoms and seven oxygen atoms with a double negative charge.
#22
What is the chemical formula for the thiosulfate ion?
S2O3^2-
ExplanationThiosulfate ion comprises two sulfur atoms and three oxygen atoms with a double negative charge.
#23
What is the chemical formula for the peroxide ion?
O2^2-
ExplanationPeroxide ion consists of two oxygen atoms with a double negative charge.