Orbital that does not exist:
1. | 6p | 2. | 2s |
3. | 3f | 4. | 2p |
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The set of quantum numbers which represent 3p is
1. n =1, l =0;
2, n = 3; l=1
3. n = 4; l =2;
4. n = 4; l = 3
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Which of the following sets of quantum numbers is possible-
1. n = 0, l = 0, ml = 0, ms = + ½
2. n = 1, l = 0, ml = 0, ms = – ½
3. n = 1, l = 1, ml = 0, ms = + ½
4. n = 3, l = 3, ml = –3, ms = + ½
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The total number of electrons in an atom with the following quantum numbers would be
(a) n = 4, ms = – ½ (b) n = 3, l = 0
1. 16, 2
2. 11, 8
3. 16, 8
4. 12, 7
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The transition in the hydrogen spectrum that would have the same wavelength as Balmer transition from n = 4 to n = 2 of He+ spectrum is -
1.
2. = 3 to n1 = 2
3. = 3 to n1 = 1
4. = 2 to n1 = 1
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2 ×108 atoms of carbon are arranged side by side. The radius of a carbon atom if the length of this arrangement is 2.4 cm would be
1. 7.0 x 10-11 m
2. 5.0 x 10-11 m
3. 8.0 x 10-11 m
4. 6.0 x 10-11 m
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The diameter of a zinc atom is 2.6 Å. If zinc atoms are arranged side by side lengthwise, number of atoms present in a length of 1.6 cm would be:
1. | 5.153 x 107 | 2. | 6.153 x 107 |
3. | 4.153 x 109 | 4. | 6.153 x 103 |
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A certain particle carries 2.5 × 10–16 C of static electric charge. The number of electrons present in it would be:
1. | 1460 | 2. | 1350 |
3. | 1560 | 4. | 1660 |
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In Rutherford's experiment, generally, the thin foil of heavy atoms like gold, platinum, etc. have been used to be bombarded by the α-particles.
If the thin foil of light atoms like aluminum etc. is used in Rutherford’s experiment, the difference that would be observed from the above results is :
1. The same results will be observed.
2. More deflection would be observed.
3. There will not be enough deflection.
4. None of the above.
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Symbols and can be written,
whereas symbols and are not acceptable because:
1. | The general convention for representing an element along with its atomic number (A) and atomic mass (Z) is |
2. | The general convention for representing an element along with its atomic mass (A) and atomic number (Z) is |
3. | The general convention for representing an element along with its wavelength (A) and frequency (Z) is |
4. | The general convention for representing an element along with its isotopes (A) and atomic number (Z) is |
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