Compare the spatial structure of methane and ethylene molecules.

In the methane molecule, the carbon atom is located in the center of the imaginary tetrahedron, and the hydrogen atoms are located at the vertices of the tetrahedron (tetrahedral structure). In an ethylene molecule, all atoms lie in one plane (flat structure).

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.