Question

draw an electron dot diagram to show the formation of each 1.Alkane 2.Alkene​

Answer 1

this is the electron dot structure of alkane and alkene.

Answer 2

We need to draw the electron dot diagram to show the formation of , (1) Alkane and (2) Alkene . We know that , the first member of Alkane group is Methane with a Molecular formula of CH₄ . And the first member of Alkene is Ethene , with a molecular formula of C₂H₄ .

$\underline{\underline{\blacksquare\pink{\textsf{ Lewis dot Structure of Alkane:- }}}}$

• The first member of this group is Methane . Alkanes have a general formula of $\sf C_nH_{2n+2}$ , and they are Saturated hydrocarbons .

• The Methane has one C atom and 4 H atom. The valency of C is 4 , and that of H is 1 . So , each carbon atom forms a single covalent bond with the four atoms of Hydrogen. For the Lewis dot structure refer to attachment.

$\rule{200}2$

$\underline{\underline{\blacksquare\pink{\textsf{ Lewis dot Structure of Alkene:- }}}}$

• The the first member of this group is ethene . Akenes have general formula of $\sf C_nH_{2n}$ , and they are Unsaturated hydrocarbons .

• Ethene has 2 carbon atoms and 4 hydrogen atoms. So the two carbon atoms form double bond with each other and each carbon atoms forms a single bond with 2 hydrogen atoms. For the Lewis dot structure refer to attachment.

$\rule{200}2$