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The electronic configuration of an eleme...

The electronic configuration of an element is `3d^(5)4s^(2)`. Mention the highest oxidation state of the element.

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For transition elements of 3d series, highest oxidation state of any element = No. of electrons in the 3d-subshell + No. of electrons in the 4s-subshell `= 2+5=7`.
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -QUESTION - ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. In which element does the last or differentiating electron enter into ...

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  2. Which of the d-block elements are not considered as transition element...

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  3. The electronic configuration of an element is 3d^(5)4s^(2). Mention th...

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  4. What is the highest oxidation state of chromium ?

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  5. Mention the highest oxidation state shown by the transition elements. ...

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  6. What is the difference between the numerical values of the successive ...

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  7. Name the element which does not exhibit variable oxidation state in th...

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  8. Name the compound that evolves as vapours when NaCl is heated with K(2...

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  9. The atomic of an element is 102. Show the outer electronic configurati...

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  10. Why are most transition metal ions paramagnetic ?

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  11. In quantitative analysis of Fe^(2+) ions with standard KMnO(4) solutio...

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  12. On reaction with the following compounds, sodium cyanide gives sodium ...

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  13. Name one ore each of chromium and manganese.

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  14. Explain why lanthanoids and actinoids are called f-block elements ?

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  15. Why do Zr(Z = 40) and Hf(Z = 72) have comparable atomic radii ?

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  16. In aqueous solution, which is the most stable oxidation state of titan...

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  17. Name the lightest and the heaviest transition elements.

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  18. Name the largest trivalent ion that exists between lanthanum (Z = 57) ...

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  19. Give one use each of niobium and tantalum.

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  20. Among Fe^(2+) and Fe^(3+), which is more stable ? Why ?

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