Question

Write the molecular formula of ethene and draw its electron dot structure.

Answer 1

Ethene:

• Ethene is an unsaturated hydrocarbon having a double bond between two carbon atoms and four hydrogen atoms.
• The molecular formula of Ethene will be ${\mathrm{C}}_2{\mathrm{H}}_4$.

Electron dot structure:

• Electron dot structure is given by keeping the Octet rule in mind which states that during the formation of a molecule, an atom of a particular element can gain, lose or share electrons until the stable electronic configuration of 8 electrons in its valence shell is reached.
• The electrons in the valence shell are represented using dots.
• Carbon has four valence electrons while hydrogen has only one valence electron.
• The electron dot structure of Ethene will be: