Question
How is the condensed formula of an organic molecule written?
✓
Answer
The complete structural formula is further simplified by hiding some or all the covalent bonds and indicating the number of identical groups attached to an atom by a subscript. The resulting formula of a compound is known as condensed formula.
e.g.
$1.$The condensed formula of ethane is written as $CH_3-CH_3$ or $CH_3CH_3.$
$2.$The condensed formula of $n-$pentane is written as $CH_3CH_2CH_2CH_2CH_3$ or $CH_3(CH_2)_3CH_3.$
e.g.
$1.$The condensed formula of ethane is written as $CH_3-CH_3$ or $CH_3CH_3.$
$2.$The condensed formula of $n-$pentane is written as $CH_3CH_2CH_2CH_2CH_3$ or $CH_3(CH_2)_3CH_3.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Benzene cannot have open chain structure. Explain this statement.
Write resonance structures of $H – COO^–$ and comment on their relative stability.
→Given the equilibrium reaction, $H _2 O _{( g )}+ CH _{4( g )} \rightleftharpoons CO _{( g )}+3 H _{2( g )}$ Using Le Chatelier's principle, predict how concentration of $CO$ will change when the equilibrium is disturbed by
i. adding $CH _4$
ii. adding $H _2$
iii. removing $H _2 O$
iv. removing $H _2$
→i. adding $CH _4$
ii. adding $H _2$
iii. removing $H _2 O$
iv. removing $H _2$
Explain the term electrophile. Give examples.
The volume of a given mass of a gas is 0.6 dm3 at a pressure of 2 atm. Calculate the volume of the gas if its pressure is increased to 2.4 at the same temperature.
Write dash formulae for the following bond line formulae.
Consider the following molecules and answer the questions:
$CH_3 – CH_2 – CH_2 – Cl, CH_3 – CH_2 – CH_2 – Br, CH_3 – CH_2 – CH_2 – I.$
$i.$ What type of inductive effect is expected to operate in these molecules?
$ii.$ Identify the molecules from these three, having the strongest and the weakest inductive effect.
→$CH_3 – CH_2 – CH_2 – Cl, CH_3 – CH_2 – CH_2 – Br, CH_3 – CH_2 – CH_2 – I.$
$i.$ What type of inductive effect is expected to operate in these molecules?
$ii.$ Identify the molecules from these three, having the strongest and the weakest inductive effect.
Write a note on occurrence of hydrogen.
What is the action of ozone on benzene?
How many electrons are present in ${ }_1^2 \mathrm{H},{ }_2 \mathrm{He}$ and $\mathrm{He}^{+}$? Which of these are hydrogen-like species?
→