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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOut 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology