Question

1. The maximum number of orbits, orbitals and electrons in N – shell is [ ]
a) 4, 12, 32 b) 4, 16, 30 c) 4, 16, 32 d) 4, 32, 64
2. The number of unpaired electrons present in palladium is [ ]
a) 1 b) 2 c) 0 d) 3
3. Among the following, impossible configuration is [ ]
a) 2p2
b) 3f7
c) 3d5
d) 4p6
4. The electronic configuration of chromium violates [ ]
a) Pauli’s exclusion principle b) Afbau principle
c) Hund’s rule d) Heisenberg’s principle
5. For l = 3, m can have how many values [ ]
a) 7 b) 5 c) 3 d) 9
6. Among the following electron will have highest energy (n, l, m, s) [ ]
a) 3, 2, 1, +
1
2
b) 4, 2, - 1, +
1
2
c) 4, 1, 0, -
1
2
d) 5, 0, 0, -
1
2
7. Number of nodal planes for f – orbital [ ]
a) 0 b) 1 c) 2 d) 3
8. From lyman series to pfund series, frequency [ ]
a) Increases b) Decreases
c) Increase (or) Decrease d) None of these
9. The radius of first orbit is [ ]
a) 0.529A° b) 0.0529A° c) 52.9A° d) 529A°
10. What is the percentage of deuterium in heavy water [ ]
a) 20% b) 80% c) 60% d) 40%

Answer 1

Answer:

1. C
2. A
3. A
4. A
5. B
6. B
7. D
8. A
9. A
10. D

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