
Interpretation:
The formula for ionic compounds formed by ions from group 2 and polyatomic ions composed of carbon and oxygen..
Concept introduction:
Chemical compounds are formed when the atoms, ions or molecules of two substances are attracted towards each other forming a

Answer to Problem 27PP
The formula of ionic compound formed by ions from group 2 and polyatomic ions composed of carbon and oxygen is
Explanation of Solution
The periodic table depicts the position of group 2 elements.
The group 2 elements are also said to be alkaline earth metals. It has electronic configuration of
The polyatomic ion composed of carbon and oxygen carbon atom is carbon bonded to 3 oxygen atoms. Here carbon atom forms 1 double bond with one oxygen atom and two single bonds with two oxygen. Has overall charge of -2.
The polyatomic ion is
The alkaline earth metal ion has +2 charge and carbonate ion has -2 charge. The ionic compound formed by combination of group 2, assumed to be ‘A’ and carbonate ion is
The formula of ionic compound composedformed by ions from group 2 and polyatomic ions composed of carbon and oxygen is
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