Question

hiii

MY QUESTION .....

Give reasons for the following:

(i)Element carbon forms compounds mainly by covalent bonding.

(ii)Diamond has a high melting point.

(iii)Graphite is a good conductor of electricity.

(iv)Acetylene bums with a sooty flame.

(v)Kerosene does not decolourise bromine water while cooking oils do.​

Answer 1

$\huge \boxed{ \bf{Answer}}$



i >> The Carbon element forms compounds mainly by covalent bond because carbon contains 6 electrons and to complete it's octat it needs 4 more electrons. Carbon neither has that much capacity to hold 4 more electrons in its outermost shell nor it has that much energy to lose 4 electrons to become stable.So, it prefers to share electrons to become stable by make $\textbf{covalent}$ bond.


ii >> Diamond has high melting point because it forms covalent bond and also due to its $\textbf{compact structure}$


iii >> Graphite is a good conductor of electricity because it contains $\textbf{free electrons}$. In graphite each carbon atoms is linked to three more carbon atoms and one free electron is left.


iv >> Acetylene contains $\textbf{high percentage}$ of carbon, due to which it burns with sooty or smoky flame.


v >> Kerosene oil is mixture of saturated hydrocarbons therefore does not decolourise bromine water.

Answer 2

Answer:

Hi sis its ur ans only one

hope it works