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Which of the following is electron defic...

Which of the following is electron deficient ?

A

`(CH_(3))_(2)`

B

`(SiH_(3))_(2)`

C

`(BH_(3))_(2)`

D

`PH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Boron is an element of 13 group and contains three electrons in its valence shell. When its compound `BH_(3)` dimerises, each boron atom carry only 6 electron deficient compound. In all other given moleculesd octet of central atom is complete.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-IONIC EQUILIBRIUM -All Questions
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  2. Which of these is least likely to act as Lewis base?

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  3. Which of the following is electron deficient ?

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  4. pH of saturated solution of Ba(OH)(2) is 12. The value of solubility p...

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  5. Equimolar solutions of the following substances were prepared separate...

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  6. Buffer solutions have constant acidity and alkalinity because

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  7. A buffer solution is prepared in which the concentration of NH(3) is 0...

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  8. pH of saturated solution of Ba(OH)(2) is 12. The value of solubility p...

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  9. What is [H^(+)] in mol//L of a solution that is 0.20 M in CH(3)COONa a...

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  10. In a buffer solution containing equal concentration of B^(-) and HB, t...

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  11. What is the [OH^(-)] in the final solution prepared by mixing 20.0 mL ...

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  12. The ionization constant of ammonium hydroxide is 1.77xx10^(-5) at 298 ...

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  13. Which of the following molecules acts as a Lewis acid?

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  14. The values of K(p(1)) and K(p(2)) for the reactions X hArr Y+Z ….(i...

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  15. The dissociation equilibrium of a gas AB, can be represented as The d...

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  16. Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a ...

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  17. A weak acid, HA, has a K(a) of 1.00xx10^(-5). If 0.100 mol of the acid...

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  18. Calculate the pOH of solution at 25^(@)C that contains 1xx10^(-10) M o...

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  19. The hydrogen ion concentration of a 10^(-8) M HCl aqueous soultion at ...

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  20. Which of the following constitutes a buffer ?

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