307612
Statement A : Half - filled and fully filled degenerated set of orbitals acquire extra stability. Statement B : The reason for the above fact is the symmetry of such orbitals.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Conceptual Questions
CHXI02:STRUCTURE OF ATOM
307613
Which one is the wrong statement?
1 The uncertainty principle is \({\rm{\Delta E \times \Delta t}} \ge \frac{{\rm{h}}}{{{\rm{4\pi }}}}{\rm{.}}\)
2 Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
3 The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
4 de-Broglie’s wavelength is given by \({\rm{\lambda = }}\frac{{\rm{h}}}{{{\rm{mv}}}}{\rm{,}}\) where m = mass of the particle, v = group velocity of the particle.
Explanation:
In case of hydrogen like atoms, energy depends on the principal quantum number only. Hence, 2s-orbital will have energy equal to 2p-orbital.
NEET - 2017
CHXI02:STRUCTURE OF ATOM
307614
The electronic configuration of \(_{{\rm{24}}}{\rm{Cr}}\) and \(_{{\rm{29}}}{\rm{Cu}}\) are abnormal
1 Due to extra stability of exactly half filled and exactly fully filled sub shells
2 Because they belong to d-block
3 Both (1) and (2)
4 None of the above
Explanation:
According to Hund's rule, half - filled and completely filled subshells are stable.
CHXI02:STRUCTURE OF ATOM
307615
Study the orbital diagrams of two atoms ‘X’ and ‘Y’. Which subshell will be more stable and why?
1 X, exchange energy is minimum, so stability is maximum
2 Y, exchange energy is minimum, so stability is minimum
3 X, exchange energy is maximum, so stability is maximum
4 Y, exchange energy is minimum, so stability is maximum
Explanation:
In 'X', one electron can exchange energy with 5 orbitals while in ‘Y’ . energy exchange is between 3 orbitals hence half-filled orbitals are more stable.
CHXI02:STRUCTURE OF ATOM
307616
Number of exchanges occuring in a \({\rm{f - }}\) subshell containing 6 unpaired electrons are
1 6
2 9
3 12
4 15
Explanation:
In order to attain stability, the electrons with same spin present in the degenerate orbitals tend to exchange thier positions. The number of exchanges that can take palce is maximum when the sub - shell is either half - filled or completely filled. The possible exchange for a \(\mathrm{\mathrm{f}^{6}}\) configuration are Thus, total number of exchanges for a \(\mathrm{\mathrm{f}^{6}}\) configuration \(\mathrm{=5+4+3+2+1=15}\)
307612
Statement A : Half - filled and fully filled degenerated set of orbitals acquire extra stability. Statement B : The reason for the above fact is the symmetry of such orbitals.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Conceptual Questions
CHXI02:STRUCTURE OF ATOM
307613
Which one is the wrong statement?
1 The uncertainty principle is \({\rm{\Delta E \times \Delta t}} \ge \frac{{\rm{h}}}{{{\rm{4\pi }}}}{\rm{.}}\)
2 Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
3 The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
4 de-Broglie’s wavelength is given by \({\rm{\lambda = }}\frac{{\rm{h}}}{{{\rm{mv}}}}{\rm{,}}\) where m = mass of the particle, v = group velocity of the particle.
Explanation:
In case of hydrogen like atoms, energy depends on the principal quantum number only. Hence, 2s-orbital will have energy equal to 2p-orbital.
NEET - 2017
CHXI02:STRUCTURE OF ATOM
307614
The electronic configuration of \(_{{\rm{24}}}{\rm{Cr}}\) and \(_{{\rm{29}}}{\rm{Cu}}\) are abnormal
1 Due to extra stability of exactly half filled and exactly fully filled sub shells
2 Because they belong to d-block
3 Both (1) and (2)
4 None of the above
Explanation:
According to Hund's rule, half - filled and completely filled subshells are stable.
CHXI02:STRUCTURE OF ATOM
307615
Study the orbital diagrams of two atoms ‘X’ and ‘Y’. Which subshell will be more stable and why?
1 X, exchange energy is minimum, so stability is maximum
2 Y, exchange energy is minimum, so stability is minimum
3 X, exchange energy is maximum, so stability is maximum
4 Y, exchange energy is minimum, so stability is maximum
Explanation:
In 'X', one electron can exchange energy with 5 orbitals while in ‘Y’ . energy exchange is between 3 orbitals hence half-filled orbitals are more stable.
CHXI02:STRUCTURE OF ATOM
307616
Number of exchanges occuring in a \({\rm{f - }}\) subshell containing 6 unpaired electrons are
1 6
2 9
3 12
4 15
Explanation:
In order to attain stability, the electrons with same spin present in the degenerate orbitals tend to exchange thier positions. The number of exchanges that can take palce is maximum when the sub - shell is either half - filled or completely filled. The possible exchange for a \(\mathrm{\mathrm{f}^{6}}\) configuration are Thus, total number of exchanges for a \(\mathrm{\mathrm{f}^{6}}\) configuration \(\mathrm{=5+4+3+2+1=15}\)
307612
Statement A : Half - filled and fully filled degenerated set of orbitals acquire extra stability. Statement B : The reason for the above fact is the symmetry of such orbitals.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Conceptual Questions
CHXI02:STRUCTURE OF ATOM
307613
Which one is the wrong statement?
1 The uncertainty principle is \({\rm{\Delta E \times \Delta t}} \ge \frac{{\rm{h}}}{{{\rm{4\pi }}}}{\rm{.}}\)
2 Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
3 The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
4 de-Broglie’s wavelength is given by \({\rm{\lambda = }}\frac{{\rm{h}}}{{{\rm{mv}}}}{\rm{,}}\) where m = mass of the particle, v = group velocity of the particle.
Explanation:
In case of hydrogen like atoms, energy depends on the principal quantum number only. Hence, 2s-orbital will have energy equal to 2p-orbital.
NEET - 2017
CHXI02:STRUCTURE OF ATOM
307614
The electronic configuration of \(_{{\rm{24}}}{\rm{Cr}}\) and \(_{{\rm{29}}}{\rm{Cu}}\) are abnormal
1 Due to extra stability of exactly half filled and exactly fully filled sub shells
2 Because they belong to d-block
3 Both (1) and (2)
4 None of the above
Explanation:
According to Hund's rule, half - filled and completely filled subshells are stable.
CHXI02:STRUCTURE OF ATOM
307615
Study the orbital diagrams of two atoms ‘X’ and ‘Y’. Which subshell will be more stable and why?
1 X, exchange energy is minimum, so stability is maximum
2 Y, exchange energy is minimum, so stability is minimum
3 X, exchange energy is maximum, so stability is maximum
4 Y, exchange energy is minimum, so stability is maximum
Explanation:
In 'X', one electron can exchange energy with 5 orbitals while in ‘Y’ . energy exchange is between 3 orbitals hence half-filled orbitals are more stable.
CHXI02:STRUCTURE OF ATOM
307616
Number of exchanges occuring in a \({\rm{f - }}\) subshell containing 6 unpaired electrons are
1 6
2 9
3 12
4 15
Explanation:
In order to attain stability, the electrons with same spin present in the degenerate orbitals tend to exchange thier positions. The number of exchanges that can take palce is maximum when the sub - shell is either half - filled or completely filled. The possible exchange for a \(\mathrm{\mathrm{f}^{6}}\) configuration are Thus, total number of exchanges for a \(\mathrm{\mathrm{f}^{6}}\) configuration \(\mathrm{=5+4+3+2+1=15}\)
307612
Statement A : Half - filled and fully filled degenerated set of orbitals acquire extra stability. Statement B : The reason for the above fact is the symmetry of such orbitals.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Conceptual Questions
CHXI02:STRUCTURE OF ATOM
307613
Which one is the wrong statement?
1 The uncertainty principle is \({\rm{\Delta E \times \Delta t}} \ge \frac{{\rm{h}}}{{{\rm{4\pi }}}}{\rm{.}}\)
2 Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
3 The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
4 de-Broglie’s wavelength is given by \({\rm{\lambda = }}\frac{{\rm{h}}}{{{\rm{mv}}}}{\rm{,}}\) where m = mass of the particle, v = group velocity of the particle.
Explanation:
In case of hydrogen like atoms, energy depends on the principal quantum number only. Hence, 2s-orbital will have energy equal to 2p-orbital.
NEET - 2017
CHXI02:STRUCTURE OF ATOM
307614
The electronic configuration of \(_{{\rm{24}}}{\rm{Cr}}\) and \(_{{\rm{29}}}{\rm{Cu}}\) are abnormal
1 Due to extra stability of exactly half filled and exactly fully filled sub shells
2 Because they belong to d-block
3 Both (1) and (2)
4 None of the above
Explanation:
According to Hund's rule, half - filled and completely filled subshells are stable.
CHXI02:STRUCTURE OF ATOM
307615
Study the orbital diagrams of two atoms ‘X’ and ‘Y’. Which subshell will be more stable and why?
1 X, exchange energy is minimum, so stability is maximum
2 Y, exchange energy is minimum, so stability is minimum
3 X, exchange energy is maximum, so stability is maximum
4 Y, exchange energy is minimum, so stability is maximum
Explanation:
In 'X', one electron can exchange energy with 5 orbitals while in ‘Y’ . energy exchange is between 3 orbitals hence half-filled orbitals are more stable.
CHXI02:STRUCTURE OF ATOM
307616
Number of exchanges occuring in a \({\rm{f - }}\) subshell containing 6 unpaired electrons are
1 6
2 9
3 12
4 15
Explanation:
In order to attain stability, the electrons with same spin present in the degenerate orbitals tend to exchange thier positions. The number of exchanges that can take palce is maximum when the sub - shell is either half - filled or completely filled. The possible exchange for a \(\mathrm{\mathrm{f}^{6}}\) configuration are Thus, total number of exchanges for a \(\mathrm{\mathrm{f}^{6}}\) configuration \(\mathrm{=5+4+3+2+1=15}\)
307612
Statement A : Half - filled and fully filled degenerated set of orbitals acquire extra stability. Statement B : The reason for the above fact is the symmetry of such orbitals.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Conceptual Questions
CHXI02:STRUCTURE OF ATOM
307613
Which one is the wrong statement?
1 The uncertainty principle is \({\rm{\Delta E \times \Delta t}} \ge \frac{{\rm{h}}}{{{\rm{4\pi }}}}{\rm{.}}\)
2 Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
3 The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
4 de-Broglie’s wavelength is given by \({\rm{\lambda = }}\frac{{\rm{h}}}{{{\rm{mv}}}}{\rm{,}}\) where m = mass of the particle, v = group velocity of the particle.
Explanation:
In case of hydrogen like atoms, energy depends on the principal quantum number only. Hence, 2s-orbital will have energy equal to 2p-orbital.
NEET - 2017
CHXI02:STRUCTURE OF ATOM
307614
The electronic configuration of \(_{{\rm{24}}}{\rm{Cr}}\) and \(_{{\rm{29}}}{\rm{Cu}}\) are abnormal
1 Due to extra stability of exactly half filled and exactly fully filled sub shells
2 Because they belong to d-block
3 Both (1) and (2)
4 None of the above
Explanation:
According to Hund's rule, half - filled and completely filled subshells are stable.
CHXI02:STRUCTURE OF ATOM
307615
Study the orbital diagrams of two atoms ‘X’ and ‘Y’. Which subshell will be more stable and why?
1 X, exchange energy is minimum, so stability is maximum
2 Y, exchange energy is minimum, so stability is minimum
3 X, exchange energy is maximum, so stability is maximum
4 Y, exchange energy is minimum, so stability is maximum
Explanation:
In 'X', one electron can exchange energy with 5 orbitals while in ‘Y’ . energy exchange is between 3 orbitals hence half-filled orbitals are more stable.
CHXI02:STRUCTURE OF ATOM
307616
Number of exchanges occuring in a \({\rm{f - }}\) subshell containing 6 unpaired electrons are
1 6
2 9
3 12
4 15
Explanation:
In order to attain stability, the electrons with same spin present in the degenerate orbitals tend to exchange thier positions. The number of exchanges that can take palce is maximum when the sub - shell is either half - filled or completely filled. The possible exchange for a \(\mathrm{\mathrm{f}^{6}}\) configuration are Thus, total number of exchanges for a \(\mathrm{\mathrm{f}^{6}}\) configuration \(\mathrm{=5+4+3+2+1=15}\)
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