temporary withdrawal or cessation from the usual work or activity. 2. a period of such withdrawal. 3. a receding part or space, as a bay or alcove in a room. 4. an indentation in a line or extent of coast, hills, forest, etc.
The most simple alkane is methane with the formula CH4. The second alkane is ethane with the formula C2H6. The general formula of alkanes is CnH2n+2. The first four alkanes are methane (CH4), ethane (C2H6), propane (C3H8) and butane (C4H10). The simplest alkane is the gas methane, whose molecular formula is CH4. Methane exists as a tetrahedral shape, but it is often represented by a flattened structure as are most organic compounds. Flattened structures for the three simplest alkanes are given in the Figure below.
R-CH3 is an organic composite obtained starting from methane (CH4) and substituting one of the hydrogen atoms with an organic radical, generally indicated with R. Frequently t â¦ he functional group-CH3 is also called methil group.mportant examples are acetic acid, where R is the acid group COOH, so that the acetic acid has molecular formula CH3COOH and the methanamine, where the functional group is the amine group (NH2) so that the molecular formula results to be CH3NH2. 1 person found this useful. Jake Weatherby.