A neutron collies head-on with a stationary hydrogen atom in ground state. Which of the following statements is/are correct ?

Lithium and hydrogen atom are in their second excited state. Which of the following statement/s is/are correct ?

Which of the following statements is correct for stationary waves

The radius of hydrogen atom, in its ground state, is of the order of

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

Hydrogen exists in atomic state in which of the following compounds?

The elctron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true ?

The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?

The electron in a hydrogen atom make a transition from an excited state to the ground state. Which of the following statement is true ?

The electron in a hydrogen atom makes a transition from an excited stateto the ground state. Which of the following statements is true ?