| 1 |
Rutherford's model of 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. There is actually no space between the nucleus and the electrons
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| 2 |
The electron in a subshell is filled according to formula. |
- A. 2n<sup>2</sup>
- B. 2(2l+1)
- C. (2l+1)
- D. None of these
|
| 3 |
Which one of the following orbital will be filled first. |
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| 4 |
De Broglie equation treats electron to be. |
- A. A particle
- B. Wave
- C. Both particle and wave
- D. None of these
|
| 5 |
An atomic orbital has l =1 , m =+1, 0, -1, n = 3 than which one of the following atomic orbital has such values. |
|
| 6 |
If uncertainty in position of electron is zero, the uncertainty in its momentum would be. |
- A. zero
- B. Less than zero
- C. Infinite
- D. One
|
| 7 |
X- rays have same nature as |
- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. Cathods rays
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| 8 |
The velocity of photon is |
- A. Independent of its wavelength
- B. Depends on its wavelength
- C. Equal to square of its amplitude
- D. Depends on its source
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| 9 |
From which quantum number is the shape of an orbital determined. |
- A. Principal
- B. Magnetic
- C. Azimuthal
- D. Spin
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| 10 |
The wave number of the light emitted by a certain source is 2 x 10<sup>6 </sup>m. the wavelength of this light is |
- A. 500 nm
- B. 500 m
- C. 200 nm
- D. 5 x 10<sup>7</sup>m
|