NEET Physics Atoms MCQs

A muonic hydrogen atom is formed when a muon (a particle with a mass approximately 207 times that of an electron but the same charge) replaces the electron. Considering Bohr's model, what is the ratio of the ionization energy of muonic hydrogen to that of regular hydrogen?

A singly ionized Helium atom emits a photon of wavelength 164 nm. If the final state of the electron is n=3, what was the initial state?

The energy of an electron in a hydrogen atom is given by $E_n = -\frac{13.6}{n^2}$ eV. What is the energy required to ionize a hydrogen atom from its ground state?

Which of these properties of X-rays is NOT true?

If an atom loses an electron, what happens to its overall charge and its emitted spectrum?

(A) It becomes negatively charged and the spectrum remains the same.

(B) It becomes positively charged and the spectrum changes.

(C) It becomes positively charged and the spectrum remains the same.

(D) It becomes negatively charged and the spectrum changes.

A singly ionized helium atom has an electron in its first excited state. What is the ratio of its energy to the energy of an electron in the second excited state of hydrogen, according to the Bohr model?

Work required to pull an electron from helium atom is 40 eV. Then the work required to pull both the electrons from the helium atom is

Work required to pull an electron from helium atom is 40 eV. Then the work required to pull both the electrons from the helium atom is

The energy required to remove the electron from a singly ionized Helium atom is 2.2 times the energy required to remove an electron from Helium atom. The total energy required to ionize the Helium atom completely is:

The energy required to remove the electron from a singly ionized Helium atom is 2.2 times the energy required to remove an electron from Helium atom. The total energy required to ionize the Helium atom completely is: