Answer:
Methane (CH4) is a simple molecule that consists of one carbon atom and four hydrogen atoms. The Lewis structure of methane shows that the carbon atom is in the center, with the four hydrogen atoms surrounding it. Each hydrogen atom is bonded to the carbon atom by a single covalent bond, and the carbon atom has four valence electrons, which are used to form these bonds. There are no lone pairs of electrons in the molecule, and the total number of valence electrons in methane is eight.
The molecular geometry of methane is tetrahedral, which means that the molecule has a three-dimensional shape that is similar to a pyramid with a triangular base. The bond angle between the hydrogen atoms in methane is 109.5 degrees, which is the angle between the vertices of a tetrahedron. This geometry is due to the fact that the carbon atom in methane has four valence electrons, which are used to form four covalent bonds with the hydrogen atoms. The tetrahedral geometry of methane is a result of the repulsion between the bonding pairs of electrons, which causes them to spread out as far as possible from each other.