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Why Zn, Cd and Hg are not regarded as tr...

Why Zn, Cd and Hg are not regarded as transtition elements?

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These metals do not have any partially filled orbitals but are still regarded as transtition elements. Because these are quite similar to other transtition elements in their chemical properties.
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Which of the d - block elements are not regarded as transition element ?

What are the characterstics of the transition elements and why are they called transition elements ? Which of the d-block elements may not be regarded as the transition elements ?

Why is 'Zn' not considered as transition element ?

Scandium forms no coloured ions, yet it is regarded as a transition elements. Why ?

Why are most of the ions transition elements coloured?

(i) Write the balanced equations to represent what happens when (a) acidified potassium permanganates reacts with hydrogen sulphide ? (b) acidified potassium dichromate solution reacts with iron (II) solution (ionic equation) ? (ii) The figure given below illustrates the first ionisation enthalpies of first, second and third series of transition elements. (a) Which series amongst the first, second and third series of transition elements have the highest first ionisation enthalpy and Why ? (b) Why there is a fall in IE_(2) from Cr to Mn and from Cu to Zn ? Explain.

The second and third rows of transition elements resemble each other much more than they resemble the first row. Why ?

Account of the following. (i) The enthalpy of atomisation is lowest for Zn in 3d -series of the transition elements. (ii) Identify the metal in MO_(3)F and justify your answer. (iii) Transition metals form a large number of complexes. (iv) d^(1) configuration is very unstable in ions.

Why are the salts of Zn , Cd and Hg are colourless.

MBD PUBLICATION-TRANSITION METALS (d-BLOCK ELEMENTS)-QUESTION BANK
  1. What happens when blue vitriol is heated?

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  2. What is the oxidation number of nickel in Ni(CO)4 ?

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  3. Why Zn, Cd and Hg are not regarded as transtition elements?

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  4. Define the term tempering and nitriding.

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  5. What is the role of limestone in the extraction of iron from red haema...

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  6. Write one method for the preparation of CuSO4. Also write its uses.

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  7. Write the ground state electronic configuration of Fe^3+ ion.

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  8. Give the formula and the name of one ammine complex of copper.

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  9. How can you get wrought iron from cast iron ?

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  10. Why transition elements form a large number of complexes?

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  11. Complete the chemical reaction. 2CuSO4 + 4kI →

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  12. Complete the chemical reaction. Cu2S + Cu2O rarr

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  13. Explain magnetic behavior of transistion elements.

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  14. Ferric oxide crystallises in a hexagonal close packed array of oxide i...

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  15. What are alloy steels? Give three examples.

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  16. Differentiate the processes annealing and hardening.

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  17. What is blue vitriol? How it is prepared?

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  18. What happens when NH4OH solution is added drop by drop to CuSO4 soluti...

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  19. Write some characteristics of transition elements.

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  20. Discuss general trends in properties of first row transition metals.

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