According to Rutherford’s model of the atom, there is a positively charged nucleus in the center of the atom, in which almost all the mass of the atom is concentrated. Around the nucleus, held by electrostatic attraction to it, negatively charged electrons continuously move at a very large distance compared to the size of the nucleus.
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.