You are watching: Is calcium carbonate ionic or covalent
COVALENT and also IONIC COMPOUNDS
What aspects make covalent bonds? Covalent bonds kind when two or an ext nonmetals combine. For example, both hydrogen and oxygen room nonmetals, and when they incorporate to make water, they perform so by developing covalent bonds. Compound that space composed of only non-metals or semi-metals with non-metals will screen covalent bonding and also will be classified as molecular compounds.
As a general ascendancy of thumb, compounds the involve a metal binding v either a non-metal or a semi-metal will display screen ionic bonding. Thus, the compound developed from sodium and also chlorine will certainly be ionic (a metal and a non-metal). Nitrogen monoxide (NO) will certainly be a covalently bound molecule (two non-metals), silicon dioxide (SiO2) will be a covalently tied molecule (a semi-metal and a non-metal) and also MgCl2 will be ionic (a metal and also a non-metal).
A polyatomic ion is an ion composed of two or an ext atoms that have a charge as a group (poly = many). The ammonium ion (see number below) consists of one nitrogen atom and also four hydrogen atoms. Together, they comprise a single ion v a 1+ charge and a formula that NH4+. The carbonate ion (see number below) consists of one carbon atom and also three oxygen atoms and also carries an overall charge the 2−. The formula that the carbonate ion is CO32−.

Example \(\PageIndex2\)
Write the molecule formula because that each compound.
chlorine trifluoride phosphorus pentachloride sulfur dioxide dinitrogen pentoxideSolution
If over there is no numerical prefix ~ above the an initial element’s name, we have the right to assume the there is just one atom the that element in a molecule.
ClF3 PCl5 SO2 N2O5 (The di- prefix on nitrogen suggests that two nitrogen atoms room present.)Exercise \(\PageIndex2\)
Write the molecule formula for each compound.
nitrogen dioxide dioxygen difluoride sulfur hexafluoride selenium monoxide Answer a:a. NO2
Answer b:O2F2
Answer c:SF6
Answer d:SeO
Because the is so unreactive, sulfur hexafluoride is used as a spark suppressant in electrical devices such as transformers.
Example \(\PageIndex3\)
Write the surname for each compound.
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Solution
bromine pentafluoride disulfur difluoride carbon monoxide