Two hydrogen atom in ground state are moving on opposite direction with the same speed and collide head on . The minimum kinetic energy of each hydrogen atom for the collision to be inelastic so that both the atoms are eccited is

State the value of minimum excitation energy for Hydrogen atom.

The minimum energy required to excite a hydrogen atom from its ground state

An electron with kinetic energy E collides with a hydrogen atom in the ground state. The collision will be elastic

A neutron moving with a speed v strikes a hydrogen atom in the ground state moving toward it with the same speed. Find the minimum kinetic energy of the neutron for which inelastic (completely or partially) collision might take place. ("Take "m_(a)=m_(b).)

The ionization energy of Hydrogen atom in its ground state is……

An electron with kinetic energy =E eV collides with a hydrogen atom in the ground state. The collision will be elastic