- 1(current)
Q. No.The probability density plots of 1s and 2s orbitals diagrams are given below
The density of dots in a region represents the probability density of finding electrons in the region.
On the basis of the above diagram which of the following statements is incorrect?
| 1. | 1s and 2s orbitals are spherical in shape |
| 2. | The probability of finding the electron is maximum near the nucleus |
| 3. | The probability of finding the electron at a given distance is equal in all directions |
| 4. | The probability density of electrons for 2s orbital decreases uniformly as the distance from the nucleus increases |
For the electrons of an oxygen atom. The correct statement among the following is-
| 1. | Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital. |
| 2. | An electron in the 2s orbital has the same energy as an electron in the 2p orbital. |
| 3. | Zeff for an electron in 1s orbital is the same as Zeff for an electron in a 2s orbital |
| 4. | The two electrons present in the 2s orbital have same spin quantum numbers ms but of opposite sign |
Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals.
| (a). | (i) n=3, l=2, ml=-2, ms=-\(\frac{1}{2}\) | (ii) n=3, l=2, ml=-1, ms=-\(\frac{1}{2}\) |
| (b). | (i) n=3, l=1, ml=+1, ms=+\(\frac{1}{2}\) | (ii) n=3, l=2, ml=+1, ms=+\(\frac{1}{2}\) |
| (c). | (i) n=4, l=1, ml=+1, ms=+\(\frac{1}{2}\) | (ii) n=3, l=2, ml=+1, ms=+\(\frac{1}{2}\) |
| (d). | (i) n=3, l=2, ml=+2, ms=-\(\frac{1}{2}\) | (ii) n=3, l=2, ml=+2, ms=+\(\frac{1}{2}\) |
1. (a), (d)
2. (b), (c)
3. (c), (d)
4. (b), (d)
The correct set of quantum numbers among the following is -
n l m
(a) 1 1 +2
(b) 2 1 +1
(c) 3 2 -2
(d) 3 4 -2
1. (a), (d)
2. (b), (c)
3. (c), (d)
4. (b), (d)
- 1(current)
Q. No.
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