Interpretation:
All carbon atoms, hydrogen atoms and lone pairs can be drawn for the given bond-line structured compounds.
Concept introduction:
The representation of each atom with their symbol in a bond-line structure of a compound is called as the structural formula of that compound. In bond-line structure each corner represent the carbon atom which in bonded with hydrogen atoms. The number of hydrogen depends upon the number of atoms attached to that particular carbon, because the covalence of carbon should be four. The lone-pairs of the compound are the non-bonding valence electrons of hetero atoms occupied in the compound. It can be calculated by the formula,
Then the lone pairs are represented as dots on its heteroatoms in structural formula.
To draw: the all carbon atoms, hydrogen atoms and lone pairs for given compounds can be do with looking upon the corners of bond-line structure and attached heteroatoms.
Answer to Problem 34PP
The structural formula of the following given compounds are
Explanation of Solution
To draw all carbon atoms for given bond-line structures of compounds.
Put a carbon atom ‘C’ to each corner in bond-line structure.
In bond-line structure, every corner represents the carbon atoms. Hence, all corners are replaced with the carbon symbol ‘C’.
To draw hydrogen atoms for given bond-line structure of compounds.
Count the adjacent atoms of carbon whether it is carbon or heteroatoms and if it is less than four we have to add hydrogen atoms in that carbon to make four as covalence.
To draw lone pairs for compound structures.
In all given compounds the lone pairs of electron are carried by heteroatoms attached to the carbon. Hence, identify the heteroatoms presented in the compound and count its bond pairs of electrons. Because Lone pairs of electron are the non-bonding pairs of electrons. The numbers of lone pairs of electron are calculated by the formula,
These lone pairs are represented by dots on the atoms in structural formula.
The structural formula of given bond-line structured compounds are drawn by representing the all atoms presented in that compound and the number of lone pairs of electron are calculated by above equation.
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