The formula of cyclopentane is C5H10. The electron dot structure, also known as the Lewis dot structure, helps to visualize the valence electrons of atoms and molecules whether they exist as lone pairs or within the bonds. A Lewis structure can be drawn for any covalently bonded molecules. The electron dot structure of cyclopentane can be represented as follows:
$$\mathrm{H}:\mathrm{C}:\mathrm{H}\ \mathrm{|}\ \mathrm{H}-\mathrm{C}:\mathrm{H}\ \mathrm{|}\ \mathrm{H}-\mathrm{C}:\mathrm{H}\ \mathrm{|}\ \mathrm{H}-\mathrm{C}:\mathrm{H}\ \mathrm{|}\ \mathrm{H}-\mathrm{C}:\mathrm{H}\ \mathrm{|}\ \mathrm{H}:\mathrm{C}:\mathrm{H}$$
where each line represents a single bond and each pair of dots represents a lone pair of electrons.
