# Maximum number of electrons in a sub shell with l = 3 and n = 4 is 1. 14 2. 16 3. 10 4. 12

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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The correct set of four quantum numbers for the valence electron of a rubidium atom (Z =37) is

1. $5,1,1,+\frac{1}{2}$

2. $6,0,0,+\frac{1}{2}$

3. $5,0,0,+\frac{1}{2}$

4. $5,1,0,+\frac{1}{2}$

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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The total number of atomic orbitals in fourth energy level of an atom is

1.  16
2.  32
3.  4
4.  8

Subtopic:  Bohr's Theory |
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The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelenghs i.e., ${\mathrm{\lambda }}_{1}$ and ${\mathrm{\lambda }}_{2}$ will be

1.  ${\mathrm{\lambda }}_{1}=2{\mathrm{\lambda }}_{2}$

2.  ${\mathrm{\lambda }}_{1}=4{\mathrm{\lambda }}_{2}$

3.  ${\mathrm{\lambda }}_{1}=\frac{1}{2}{\mathrm{\lambda }}_{2}$

4.  ${\mathrm{\lambda }}_{1}={\mathrm{\lambda }}_{2}$

Subtopic:  Bohr's Theory |
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If n = 6, the correct sequence for the filling of electrons will be

1.

2.

3.

4.

Subtopic:  AUFBAU Principle |
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The rule used to determine the maximum number of electrons in a subshell of an atom is

1. 4l+2

2. 2l+1

3. 4l-2

4. 2n2

Subtopic:  Shell & Subshell |
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The incorrect set of quantum numbers among the following is
1. n= 4, l= 0, m= 0, s= -1/2
2. n= 5, l= 3, m= 0, s= +1/2
3. n= 3, l= 2, m= -3, s= -1/2
4. n= 3, l= 2, m= 2, s= -1/2

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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If uncertainty in position and momentum are equal, then uncertainty in velocity is:

1.  $\frac{1}{2\mathrm{m}}\sqrt{\frac{\mathrm{h}}{\mathrm{\pi }}}$

2.  $\sqrt{\frac{\mathrm{h}}{2\mathrm{\pi }}}$

3.  $\frac{1}{\mathrm{m}}\sqrt{\frac{\mathrm{h}}{\mathrm{\pi }}}$

4.  $\sqrt{\frac{\mathrm{h}}{\mathrm{\pi }}}$

Subtopic:  Heisenberg Uncertainty Principle |
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The measurement of the electron position is associated with uncertainty in momentum, which is equal to 1 x 10-18 g cm s-1. The uncertainty in electron velocity will be (mass of an electron is 9 x 10-28 g)-

1. 2 x 109 cm s-1
2. 1 x 109 cm s-1
3. 1 x 105 cms-1
4. 1 x 1011 cm s-1

Subtopic:  Heisenberg Uncertainty Principle |
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Consider the following sets of quantum numbers :

Which of the following sets of quantum number is not possible?

1. ii, iii and iv
2. i, ii, iii and iv
3. ii, iv and v
4. i and iii

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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