Carbonyl group does not have hydrogen, it is a carbon double bonded to oxygen.
In chemistry, a ketone (alkanone) /ˈkiːtoʊn/ is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond). Ketones differ from aldehydes in that the carbonyl group (CO) is bonded to two carbons within a carbon skeleton. In aldehydes, the carbonyl is bonded to one carbon and one hydrogen and are located at the ends of carbon chains. 1 These two are ketones and aldehydes. 2  In ketones, the carbonyl carbon i…. 3  The Carbonyl Group in Organic Compounds Organic chemistry studies the properties of compounds that contain carbon (C) atoms in their molecule. 1 In ketones, the carbonyl carbon i…. 2  The Carbonyl Group in Organic Compounds Organic chemistry studies the properties of compounds that contain carbon (C) atoms in their molecule. 3  In organic chemistry, the carbonyl group is made of a carbon atom tied …. 1 These two are ketones and aldehydes. 2  In ketones, the carbonyl carbon i…. 3  The Carbonyl Group in Organic Compounds Organic chemistry studies the properties of compounds that contain carbon (C) atoms in their molecule. 4  In organic chemistry, the carbonyl group is made of a carbon atom tied …. carbonyl group does not have hydrogen, it is a carbon double bonded to oxygen. by adding a nucleophile such as H-or water you can form an alcohol in an addition reactio … n. 2 people found this useful. Priyadarshi Raj. Description of the Carbonyl Group. It is somewhat misleading to write the carbonyl group as a covalent C=O double bond. The difference between the electronegativities of carbon and oxygen is large enough to make the C=O bond moderately polar. As a result, the carbonyl group is best described as a hybrid of the following resonance structures.  Nomenclature of Aldehydes and Ketones. Aldehydes and ketones are organic compounds which incorporate a carbonyl functional group, C=O. The carbon atom of this group has two remaining bonds that may be occupied by hydrogen or alkyl or aryl substituents. If at least one of these substituents is hydrogen, the compound is an aldehyde.  Carboxylic acids, ketones, aldehydes, and esters all contain a carbonyl group. Ethers do NOT contain a carbonyl group. carbonyl group does not have hydrogen, it is a carbon double bonded to oxygen. by adding a nucleophile such as H-or water you can form an alcohol in an addition reactio … n. 2 people found this useful. Priyadarshi Raj. 702 16 Carbonyl Compounds I. Aldehydes and Ketones. Addition Reactions of the Carbonyl Group Enamines Secondary amino compounds of the type R2N-H add to aldehyde and ketone carbonyl groups in an acid-catalyzed reaction in much the same way as do RNH2 compounds-with one important difference. 696 16 Carbonyl Compounds I. Aldehydes and Ketones. Addition Reactions of the Carbonyl Group Polymerization of Aldehydes A reaction closely related to acetal formation is the polymerization of alde-hydes. The carbonyl group The simple view of the bonding in carbon-oxygen double bonds Where the carbon-oxygen double bond, C=O, occurs in organic compounds it is called a carbonyl group. The simplest compound containing this group is methanal. For carbonyl as a ligand, see Metal carbonyl. A compound containing a carbonyl group (C=O). In organic chemistry, a carbonyl group is a functional group composed of a carbon atom double-bonded to an oxygen atom: C=O. It is common to several classes of organic compounds, as part of many larger functional groups. A compound containing a carbonyl group is often referred to as a carbonyl compound. 
https://en.wikipedia.org/wiki/Ketone http://www.answers.com/Q/What_functional_group_contains_a_carbonyl_carbon http://www.answers.com/Q/Which_types_of_compounds_contain_a_carbonyl_group http://chemed.chem.purdue.edu/genchem/topicreview/bp/2organic/carbonyl.html https://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/aldket1.htm http://www.answers.com/Q/Which_types_of_compounds_contain_a_carbonyl_group http://authors.library.caltech.edu/25034/17/BPOCchapter16.pdf http://chemguide.co.uk/basicorg/bonding/carbonyl.html https://en.wikipedia.org/wiki/Carbonyl
which type of compound does not contain a carbonyl group