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Which of the following MO's has zero nod...

Which of the following `MO's` has zero nodal planes ? .

A

`sigma^(**) 1s`

B

`sigma 1 s`

C

`pi 2p_(x)`

D

`pi^(**) 2p_(z)`

Text Solution

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The correct Answer is:
B
Only bonding `sigmas MO`s have zero nodal plane .
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MO' s are formed by the overlap of A'O s Two AO's combine to form two MO's called bonding molecular orbital (BMO) and antibonding molecular orbital (ABMO) Differnet AO' s of one atom combine with these AO 's of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the MO is called 'pi' The MO's are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics Which one of the following has maximum number of nodal planes ? .

CENGAGE CHEMISTRY-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Exercises Single Correct (Molecular Orbital Theory (Mot))
  1. The species which does not show paramagnetism is .

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  2. Which of the following cannot exist on the basic of MO theory ? .

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  3. Which one paramagnetic and has a bond order of 0.5 ? .

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  4. The bond energies NO,NO^(o=) and No^(Theta) ion the highest occupied o...

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  5. In the MO diagram for O(2)^(Theta) ion the highest occupied orbital is...

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  6. Which of the following is not diamagnetic ? .

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  7. The bond order of CO and NO is .

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  8. Combination of two AO s lead to the formation of .

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  9. The possible molecular orbital formed when two d-orbitals overlap is .

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  10. Which of the following species exhibits the diamagnetic behaviour ?

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  11. Which of the following species is paramagnetic ? .

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  12. The bond order in NO is 2.5 while that in NO^(o+) is 3 Which of the fo...

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  13. When two AO s combine energy of bonding MO is lowered by x while of an...

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  14. In Which of the following the double bond consistts of the pi bonds .

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  15. Which of the following MOs has more than one nodal plane?

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  16. Which of the following MO's has zero nodal planes ? .

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  17. The main axis of diatomic molecule is z. The orbitals px and py overla...

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  18. The paramagnetic property of the oxygen molecule is due to the presenc...

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  19. Which of the following combination is not allowed in the LCAO method f...

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  20. The energy of sigma(2s), is greater than that of sigma(1s)^** orbital ...

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