Question

the atomic radius of hydrogen atom in pm

Answer 1

The atomic radius of hydrogen atom in pm is around {120 pm}
there are many other ways to define the radius for atom so follow the appropriate hyperlink for literature and definition of each type of radius all value of raddi are given in picometers means pm
1 pm =1 ×10power -12 meter
100 pm =1 Angstrom
1000 pm =1 manometer