10 Questions
In a compound, why is the number of positive and negative charges equal?
To ensure that the overall charge on the compound is zero.
What is a molecular ion?
A species made up of two or more atoms covalently bonded with an overall charge.
Can you give some examples of molecular ions?
Sulfate (SO42-), sulfite (SO32-), thiosulfate (S2O32-), hydrogensulfate (HSO4-), hydrogencarbonate (HCO3-), carbonate (CO32-), nitrate (NO3-), nitrite (NO2-), phosphate (PO43-), chlorate (ClO3-), hypochlorite (ClO-), hydroxide (OH-), dichromate (Cr2O72-), chromate (CrO42-), manganate(VII) (MnO4-), ammonium (NH4+).
How are molecular ions represented in a chemical formula?
If more than one molecular ion is required, brackets are used.
Can you provide an example of a compound with multiple molecular ions in its formula?
Calcium hydrogencarbonate (Ca(HCO3)2).
What is the overall charge on a compound with an equal number of positive and negative charges?
The overall charge on a compound with an equal number of positive and negative charges is zero.
Define a molecular ion.
A molecular ion is a species made up of two or more atoms covalently bonded with an overall charge.
Provide examples of common molecular ions.
Some examples of common molecular ions include sulfate (SO42-), sulfite (SO32-), thiosulfate (S2O32-), hydrogensulfate (HSO4-), hydrogencarbonate (HCO3-), carbonate (CO32-), nitrate (NO3-), nitrite (NO2-), phosphate (PO43-), chlorate (ClO3-), hypochlorite (ClO-), hydroxide (OH-), dichromate (Cr2O72-), chromate (CrO42-), manganate(VII) (MnO4-), and ammonium (NH4+).
How are molecular ions represented in a chemical formula?
If more than one molecular ion is required in a formula, brackets are used to represent them. For example, calcium hydrogencarbonate is represented as Ca(HCO3)2.
What is the molecular ion in calcium hydrogencarbonate?
The molecular ion in calcium hydrogencarbonate is HCO3-.
Test your knowledge on molecular ions and their charges with this quiz! Identify common examples such as sulfate, sulfite, nitrate, and more.
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