Which of the following sets of quantum numbers represent an impossible arrangement?
 

n m  s
1. 3 2   -2  (+)\(\frac{1}{2}\)
2. 4 0  (-)\(\frac{1}{2}\)
3. 2 -3 (+)\(\frac{1}{2}\)
4. 5 (-)\(\frac{1}{2}\)

                  

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Correct set of four quantum numbers for the outermost electron of rubidium (Z=37) is:

1. 5, 0, 0, 1/2

2. 5, 1, 0, 1/2

3. 5, 1, 1, 1/2

4. 6, 0, 0, 1/2

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Number of unpaired electrons in 1s2 2s2 2p3 is -

1. 2

2. 0

3. 3

4. 1

Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
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The quantum numbers of four electrons are given below.

                                  n            l           m          s 

(1) Electron 1             3            0             0           -1/2

(2) Electron 2             4            0             0           1/2

(3) Electron 3            3             2             0           1/2

(4) Electron 4            3             1             0           -1/2

The correct order of decreasing energy of these electrons is - 

1. Electron 3 > Electron 1 > Electron 4> Electron 2

2. Electron 4> Electron 2 > Electron 3 > Electron 1

3. Electron 3 > Electron 2 > Electron 4 > Electron 1

4. Electron 2 > Electron 4 > Electron 3 > Electron 1

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Which type of radiation is not emitted by the electronic structure of atoms:

1. Ultraviolet light

2. X-rays

3. Visible light

4. y-rays

Subtopic:  Electromagnetic Radiation |
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An absorption line of the lowest frequency in the transition of hydrogen spectra is:

1. n=1 to n=2

2. n=3 to n=8

3. n=2 to n=1

4. n=8 to n=3

Subtopic:  Hydrogen Spectra |
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The maximum number of atomic orbitals associated with a principal quantum number 5 is-

1. 9

2. 12

3. 16

4. 25

Subtopic:  Quantum Numbers & Schrodinger Wave Equation | Shell & Subshell |
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The de-Broglie wavelength of a particle having the momentum of
3.3 x 10-24 kg m s-1 will be;

1. 0.002 Å

2. 0.02 Å

3. 0.2 Å

4. 2Å

Subtopic:  Planck's Theory |
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The quantum number of the most energetic electron in an Ne atom in the first excited state is

1. 2, 1, 0, +1/2 2. 3, 1, 1, +1/2
3. 3, 0, 0, +1/2 4. 3, 1, 0, +1/2
Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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The total number of neutrons in dipositive zinc ions with mass number 70 is -

1. 34

2. 40

3. 36

4. 38

Subtopic:  Number of Electron, Proton & Neutron |
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