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(a) Why does NO2 dimerise ? (b) In wha...

(a) Why does `NO_2` dimerise ?
(b) In what way can it be proved that `PH_3` is basic in nature ?

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`NO_(2)` contains odd number of valence electrons. It behaves as a typical odd molecule. On dimerisation, it is converted to a stable `N_(2)O_(4)` molecule, with even number of electrons.
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NARAYNA-15TH GROUP ELEMENTS-EXERCISE - 4 (NCERT EXEMPLERS/HOTs)
  1. (a) Why does NO2 dimerise ? (b) In what way can it be proved that PH...

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  2. Nitrogen can be purified from the impurities of oxides of nitrogen and...

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  3. Very pure nitrogen can be obtained by :

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  4. When sodium is dissolved in liquid ammonia, a solution of deep blue co...

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

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  6. Gas obtained by heating a mixture of ammonium chloride and slaked lime...

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  7. Ammonia is not a product in the

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  8. Phosphine is not obtained by the reaction when

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  9. The bottle of liqure ammonia is cooled before opening the cork bec...

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  10. The dipoles moment of NF(3) is less than NH(3) because

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  11. Ammonia can not be obtained by

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  12. The compound (SiH(3))(3)N is expected to be

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  13. The number of P-O-P bonds present in P(4)O(6) and P(4)O(10) are respec...

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  14. One of the acid listed below is formed P(2)O-(3) and the rest are form...

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  15. Group 15 of the periodic table consists of the elements N, P, As, Sb a...

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  16. The number of bond in P(4)O(10) is

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  17. The nitrate which when heated gives off a gas (or) a mixture of gases ...

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  18. In nitroprusside ion, the iron and NO exist as Fe(II) and NO^(+) rathe...

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  19. The correct order of bond angle of NO(2)^(+),NO(2) and NO(2)^(-) is

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  20. A tetra-atomic molecule (A) on reaction with nitrogen (I) oxide, produ...

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  21. Polyphosphates are used as water softening agents because they

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