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On moving down the group, the covalent a...

On moving down the group, the covalent and ion radii increases with increase in atomic number. Why ?

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SHARAM PUBLICATION-GROUP 15 ELEMENTS (NITROGEN FAMILY-EXERCISE
  1. Why is H3PO3 dibasic , even though it contains three H-atoms ?

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  2. Why does metallic character of Gr 15 elements increases down the group...

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  3. On moving down the group, the covalent and ion radii increases with in...

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  4. Why does nitrogen exist as a diatomic molecule and is a gas at room te...

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  5. What happens when aqueous solution of NH3 reacts with AlCl3 solution ?

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  6. What happens when dil NH4OH is added to AgCl precipitate ?

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  7. What are the favourable conditions for synthesis of NH3 by Haber's pro...

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  8. The b.p of hydrides of Group 15 increase regularly as we move from PH3...

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  9. Explain why the reducing power for the hydrides of Gr-15 increases dow...

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  10. NF3 is stable, but NCl3 NBr3 and NI3 are unstable. Why ?

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  11. What is the action of SbCL3 and NCl3 with water ?

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  12. Why does nitrogen show anomalous behaviour ?

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  13. What happens when ammonium dichromate is heated ?

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  14. What is the action of N2 with calcium carbide ?

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  15. What happens when dilNH4 OH is added to CrCl3 solution ?

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  16. How is NH3 converted to urea ?

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  17. What happens when NH3 is passed over molten sodium ?

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  18. What happens when white phosphorus burns in air ?

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  19. Why is red phosphorous is less than reactive white phosphorous ?

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  20. Explain, why NH3is a complexing agent ?

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