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Why "30Zn^(2+) salts are white while "29...

Why `"_30Zn^(2+)` salts are white while `"_29Cu^(2+)` salts are blue?

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Why Zn^(2+) salts are white Ni^(2+) salts or Cu^(2+) salts are blue ?

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UNITED BOOK HOUSE-MP_1-EXERCISE
  1. Give one reason why a finely divided substance is more effective as an...

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  2. The atomic sizes of "26Fe(27)Co and "28Ni are nearly same. Explain wit...

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  3. Why "30Zn^(2+) salts are white while "29Cu^(2+) salts are blue?

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  4. Give an example of an artifical sweetener whose use is limited to cold...

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  5. A solutioln of CuSO4 is electrolysed for 10 mins wite a current of 1.5...

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  6. What are 'micelles'? Give an example of heterogenous catalysis.

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  7. Between white & red phosphorus which one is more reactive & why?

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  8. Explain the following: HF acid is stored in wax coated galss bottles.

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  9. Explain the following: HCIO4 is a stronger acid than H2SO4.

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  10. Write the IUPAC name for the coordination compound Fe4[Fe(CN)6]3

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  11. Explain why [Co(NH3)6]^(3+) ion is diamagnetic. [Z for Co=27]. By usin...

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  12. What is co-polymer? Give example.

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  13. What is Frenkel Defect?

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  14. Two ions A^+ and B^- have raddi 88 and 200 pm respectively. In the clo...

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  15. What is sehottky defect?

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  16. Gold (at mass 19^- at radius=0.114 nm) crystallizes in a FCC unit cell...

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  17. Calculate DeltaG^@ in kJmol^(2+) and equilibrium constant for the foll...

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  18. Differentiate between the following: Calcination and roasting

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  19. Differentiate between the following: Gangue and flux

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  20. Differentiate between the following: Galvanization and tin plating.

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