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Molecular Orbital Energy Diagrams

Which of the ...

Question

Which of the following represents the correct order of filling the molecular orbitals of $B_{2}, C_{2}$ and $N_{2}$ ?

π_{2 p_{x}} = π_{2 p_{y}} < σ_{2 p_{z}} < π_{2 p_{x}}^{*} = π_{2 p_{y}}^{*} < σ_{2 p_{z}}^{*}

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σ_{2 p_{z}} < π_{2 p_{x}} = π_{2 p_{y}} < π_{2 p_{x}}^{*} = π_{2 p_{y}}^{*} < σ_{2 p_{z}}^{*}

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σ_{2 p_{z}} = π_{2 p_{x}} = π_{2 p_{y}} < π_{2 p_{x}}^{*} = π_{2 p_{y}}^{*} < σ_{2 p_{z}}^{*}

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π_{2 p_{x}} < π_{2 p_{y}} = σ_{2 p_{z}} > π_{2 p_{y}}^{*} < π_{2 p_{z}}^{*} = σ_{2 p_{z}}^{*}

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Solution

The correct option is A $π_{2 p_{x}} = π_{2 p_{y}} < σ_{2 p_{z}} < π_{2 p_{x}}^{} = π_{2 p_{y}}^{} < σ_{2 p_{z}}^{}$
According to the modified modern concept, the energy of molecular orbitals increases in the order (number of electrons < 14)
$σ 1 s < σ^{} 1 s < σ 2 s < σ^{} 2 s < π 2 p_{x} = π 2 p_{y} < σ 2 p_{z} < π^{} 2 p_{x} = π^{} 2 p_{y} < σ^{} 2 p_{z}$

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Similar questions

Q. Which of the following represents the correct order of filling the molecular orbitals of

B_{2}, C_{2}

and

N_{2}

Q. Which of the following order of energies of molecular orbitals of

N_{2}

is correct?

The bond disscioation energies of molecules $A_{2}, B_{2} a n d C_{2}$ are 945, 158, 498KJ/ mole respectively.if so, the correct decreasing order of their bond orders is

Q. Which statements are correct for CO and

N_{2}

according to molecular orbital theory ?
(I) Bond order of CO and

N_{2}

are 3 and 3
(II) Bond order of CO and

N_{2}

are same
(III) During the formation of

N_{2}^{+}

from

N_{2}

bond length increases
(IV) During the formation of

C O^{+}

from CO, the bond length decreases.

Question 19

Which of the following statement is not correct from the view point molecular orbital theory?

(a) $B e_{2}$ is not a stable molecule

(b) $H e_{2}$ is not stable but $H e_{2}^{+}$ is expected to exist.

(d) The order of energies of molecular orbitals in $N_{2}$ molecule is

$σ 2 s < σ^{*} 2 s < σ 2 p_{z} < (π^{*} 2 p_{x} ≃ π^{*} 2 p_{y}) < σ^{*} 2 p_{z}$

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Molecular Orbital Energy Diagrams

Standard XIII Chemistry

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Which of the following represents the correct order of filling the molecular orbitals of B2,C2 and N2 ?

The correct option is A π2px=π2py<σ2pz<π∗2px=π∗2py<σ∗2pzAccording to the modified modern concept, the energy of molecular orbitals increases in the order (number of electrons < 14) σ1s<σ∗1s<σ2s<σ∗2s<π2px=π2py<σ2pz<π∗2px=π∗2py<σ∗2pz

Which of the following represents the correct order of filling the molecular orbitals of $B_{2}, C_{2}$ and $N_{2}$ ?