CH4, also known as methane, is a nonpolar molecule. This is because it has a symmetrical tetrahedral shape, and the electronegativity difference between carbon (C) and hydrogen (H) is very small. In a CH4 molecule, the carbon atom shares electrons equally with the four hydrogen atoms, resulting in a balanced distribution of charge.
Since there is no significant difference in electronegativity between carbon and hydrogen, the bonds in CH4 are considered nonpolar covalent. This means that the electrons are shared equally between the atoms, and there is no separation of charge within the molecule.
In summary, CH4 is a nonpolar molecule with nonpolar covalent bonds.