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Name the metal with tripositive ion repr...

Name the metal with tripositive ion represented by the configuration :
`1s^2 2s^2 2p^6 3s^2 3p^6 3d^5`

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`Cr^(3+)` is the ion represented by the configuration `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(3)`.
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ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why does vanadium pentoxide acts as a catalyst?

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  2. What is the common oxidation state of Cu, Ag and Au?

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  3. Name the metal with tripositive ion represented by the configuration :...

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  4. Out of Cr^(2+) and Cr^(3+), which one is stable in aqueous solution?

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  5. What is meant by 'disproportionation'? Give an example of disproporti...

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  6. Which elements are called ferrous metals ?

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  7. What are platinum metals ?

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  8. What is the highest oxidation state shown by a transition element.

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  9. Name one ore each of manganese and chromium.

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  10. What do you mean by 18 carat gold ?

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  11. Out of Al, Zn, Mg and Fe which is the densest element?

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  12. Which is more stable Fe^(2+) or Fe^(3+)? Why ?

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  13. Why is Pt(IV) more stable than Ni(IV).

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  14. K2 Pt Cl6 is well known compound while corresponding Ni compound is n...

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  15. Why is electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2 n...

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  16. How does the ionic/covalent character of the compounds of a transition...

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  17. Why do transition elements have high value of hydration enthalpy?

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  18. Why Fe^(2+) has smaller radius than Mn^(2+) ?

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  19. Why do most transition metal ions exhibit paramagnetism ?

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  20. How is the magnetic moment of a species related to the number of unpai...

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