What is radius hydrogen atom?

The radius of a hydrogen atom is approximately 0.053 nanometers. This is the average distance between the nucleus (proton) and the electron in the ground state of the hydrogen atom. The size of the hydrogen atom is determined both by the attractive force between the positively charged nucleus and the negatively charged electron, and by the wave-like nature of the electron, which gives it a finite probability of being found at greater distances from the nucleus. The hydrogen atom is the simplest and most abundant atom in the universe, and its radius is important in understanding the behavior of atoms and molecules in chemical reactions.