Atoms - Online Test
Q1. In which of the models An atom has a nearly continuous mass distribution?
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. In which of the models An atom has a highly non-uniform mass distribution?
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. In which of the models, the positively charged part of the atom possesses most of the mass?
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. Using the Bohr’s model calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels.
Answer : Option D
Explaination / Solution:
No Explaination.
Q8. Using the Bohr’s model Calculate the orbital period of the electron in a hydrogen atom in the n = 1, 2, and 3 levels.
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?
Answer : Option C
Explaination / Solution:
No Explaination.
