Adaptive Practice
Structure of Atom
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Question 1 of 10
⏱ 0:30
Easy
Who proposed the 'Plum Pudding' model of the atom?
Easy
Which of the following particles has the least mass?
Medium
The discovery of the nucleus was made by which experiment?
Medium
What is the maximum number of electrons that can be accommodated in the 3rd shell (n=3)?
Medium
Which quantum number determines the shape of an atomic orbital?
Hard
The ionization energy of hydrogen atom in its ground state is 13.6 eV. What is the ionization energy of the electron in the n=2 state?
Hard
According to Bohr’s model, the radius of the first orbit of hydrogen atom is 0.529 Å. What is the radius of the third orbit?
Easy
Which of the following statements about isotopes is correct?
Medium
The magnetic quantum number (m) can have values ranging from:
Hard
Calculate the wavelength of the photon emitted when an electron in hydrogen atom falls from n=3 to n=2. (Given: Rydberg constant R = 1.097 × 10⁷ m⁻¹)