| 1 |
Node is a surface on which probability of finding electron is |
- A. Zero
- B. More than 95%
- C. 50%
- D. Infinite
|
| 2 |
Spectrum produced due to the transition of electron from M-Shall to L-Shell is. |
- A. Absorption
- B. Emission
- C. Continuous
- D. X rays
|
| 3 |
As the quantum number n increases, the energy difference between adjacent energy level. |
- A. Increase
- B. Remain same
- C. Decrease
- D. No correlation
|
| 4 |
An orbital which is spherical and symmetrical is |
- A. S-Orbital
- B. P - Orbital
- C. d- Orbital
- D. f - Orbital
|
| 5 |
Rutherford's model of atom failed because. |
- A. The atom did not have a nucleus and electron
- B. It did not account for the attraction between protons and neutrons.
- C. It did not account for stability of the atom
- D. There is actually no space between the nucleus and the electrons.
|
| 6 |
The wave number of the light emitted by a certain source is 2 x 10<sup>6</sup>m<sup>-1</sup>The wave length of this light is. |
- A. 500 nm
- B. 500 m
- C. 200 nm
- D. 600 m
|
| 7 |
Quantum number values for 2p orbitals are. |
- A. n = 2, 1 =1
- B. n =1, 1 = 2
- C. n =1, 1= 0
- D. n = 2, 1 = 0
|
| 8 |
Which of the following particles would on losing an electron has its outermost p-orbital as half filled |
- A. Nitrogen atom
- B. O<sup>+</sup>ion
- C. P<sup>-1</sup>ion
- D. S<sup>+1</sup>ion
|
| 9 |
From which quantum number is the shape of an orbital determined. |
- A. Principal
- B. Magnetic
- C. Azimuthal
- D. Spin
|
| 10 |
Which formula will be used to determine the number of in electrons sub shell of an atoms. |
- A. 2(l+1)
- B. 2(2l+1)
- C. (l+1)
- D. (2l+1)
|