| 1 |
Which electron traveled more distance, when jump from |
- A. n1 to n2
- B. n2 ato n3
- C. n3 to n2
- D. n3 to n4
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| 2 |
Hund's rule state that when electrons enter to the same sub levels they are. |
- A. Singly occupied with same spin
- B. Doubly occupy with same spin
- C. Singly occupied with different spin
- D. Doubly occupied with different spin
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| 3 |
Which of the following orbitals is not possible. |
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| 4 |
Rutherford's model fo atom failed because |
- A. The atom did not have a nucleus and electrons.
- B. It did not account for the attraction between protons and neutrons.
- C. It did not account for the stability of the atom
- D. Their is actually no space between the nucleus and the electrons.
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| 5 |
Which particle have greater wave nature. |
- A. Electron
- B. Proton
- C. Neutron
- D. a particles
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| 6 |
When atoms are subjected to strong electric field, splitting of spectral lines is called. |
- A. Zeeman effect
- B. stark effect
- C. Photoelectric effect
- D. Compton effect
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| 7 |
Maximum number of electrons in f-subshell is. |
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| 8 |
X- rays have same nature as |
- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. Cathods rays
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| 9 |
Bohr's model of atom is contradicted b y. |
- A. Planck quantum theory
- B. Quantization of energy of electrons
- C. Heisenberg's uncertainty principle
- D. Quantization of angular momentum
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| 10 |
Lyman series lie in |
- A. Ultraviolet region
- B. Visible region
- C. Infrared region
- D. Radio waves region
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