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In Nitrogen family the H-M-H angle in th...

In Nitrogen family the H-M-H angle in the hydrides `MH_(3)` gradually becomes closer to `90^(@)` on going from N to Sb. This due to

A

The basic strength of hydrides increases

B

Almost pure p-orbitals are used for M-H bonding

C

The bond energies of M-H bond increases

D

The bond pairs of electrons becomes nearer to the central atom

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The correct Answer is:
D
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A particle is thrown with speed u at an angle of projection theta with horizontal as shown. (i) The avergae velocity of particle from O to A is u cos theta (ii) The average velocity of particle from O to H (highest point) is (u)/(2) sqrt(1 + 3 cos^(2) theta) (iii) The average velocity of particle from J to K is u cos theta (iv) The angle between the velocity and the acceleration between O and H is greater than 90^(@) , between H to A is less than 90^(@) and at highest point is 90^(@)

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ERRORLESS -S AND P BLOCK ELEMENTS-Ordinary thinking (Nitrogen family)
  1. Oxidation state of +1 for phosphorus is found in

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  2. Which of the following tendencies remains unchanged on going down in t...

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  3. In Nitrogen family the H-M-H angle in the hydrides MH(3) gradually bec...

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  4. Which of the following halides is most acidic ?

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  5. An aqueous solution of nitrous acid (HNO(2)) , free of salts , can be ...

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  6. Dehydrated phosphorus trichloride in water gives

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  7. Which oxide does not act as a reducing agent?

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  8. In NH(4)NO(2), the oxidation number of nitrogen will be

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  9. Electrolysis temperature is maximum for

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  10. White phosphorus is

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  11. In which compound, the oxidation state of phosphorus is +4

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  12. The P-P-P bond angle in white phosphorous is .

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  13. Which acid is formed by P(2)O(3)

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  14. Which of the following exhibits highest solubility in water?

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  15. An element (X) forms compounds of the formuls XCl(3),X(2)O(5) and Ca(3...

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  16. Which of the following is manufactured from the molecular nitrogen by ...

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  17. Inertness of N(2) gas is due to

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  18. When ammonia is passed over heated copper oxide, the metallic coper is...

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  19. Which of the element of nitrogen family produce maximum number of oxy-...

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  20. Which of the following flourides does not exist?

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