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The paramagnetic behaviour of B2 is due ...

The paramagnetic behaviour of `B_2` is due to the presence of

A

two unpaired electrons in `pi_b` MO

B

two unpaired electrons in `pi^star` MO

C

two unpaired electrons in `sigma^star` MO

D

two unpaired electrons in `sigma_b` MO

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The correct Answer is:
A
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PATHFINDER-CHEMICAL BONDING AND MOLECULAR STRUCTURE-QUESTION BANK
  1. The number of sigma and pi bonds present in pent-1-en-4-yne

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  2. The hybridisation present in IF3 is

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  3. The paramagnetic behaviour of B2 is due to the presence of

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  4. CO is practically non-polar since

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  5. The state of hybridisation of the central atom and the number of lone ...

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  6. The molecule having smallest bond angle is

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  7. In which of the following pairs the two species are not isostructural ...

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  8. The hydrogen bonds are encountered in HF, H2O, NH3 and HF2^-. The rela...

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  9. The polarizability of the following anions, N^(3-), O^(2-) and F^-, fo...

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  10. As per molecular orbital theory, which can't exist in stable state ?

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  11. Which of the following forms stable coordinate bonds ?

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  12. An element forms X2 with triple bond. The configuration of the element...

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  13. The molecule which contain ionic, covalent and co-ordinate bond is

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  14. The percentage of p-character of the hybrid orbitals in graphite and d...

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  15. Which of the following order for bond angles is correct ?

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  16. Which of the following is diamagnetic ?

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  17. A diatomic molecule has a dipole moment equal to 1.2.D. If bond distan...

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  18. Bond polarity of diatomic molecule is because of

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  19. Which one of the following pairs is isostructural (i.e., having the sa...

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  20. Bond order of 1.5 is shown by

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