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Why do transition elements shows variabl...

Why do transition elements shows variable oxidation states?

A

1. F

B

2. Se

C

3. Zn

D

4. N

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The correct Answer is:
D
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Why do transition elements show variable oxidation state?

(a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). (ii) Name the element which shows only + 3 oxidation state. (b) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.

(a) Describe the general trends in the following properties of the first series of the transition elements: (i) Stability of +2 oxidation state (ii) Formation of oxometal ions (b) Assign reason for each of the following: (i) Transition elements exhibit variable oxidation states. (ii)Transition metal ions are usually coloured

Give reason: (i) Transition metals show variable oxidation states. (ii) Actinoids show wide range of oxidation states.

Give reason for the following : (i) Mn shows the highest oxidation state of +7 with oxygen but with fluorine, it shows the highest oxidation state of +4 (ii) Transition metals show variable oxidation states. (iii) Actinoids show irregularities in their electronic configurations.

Explain the following (a) Zr and Hf exhibit similar properties. (b) Most of the transition elements show large number of oxidation states.

Assign reasons for each of the following (i) Trasitiono elements exhibit variable oxidation sates. (ii) Transition metal ions are usually coloured.

Why do alkali metals not show variable oxidation states ?

Which transition element does not exhibit variable oxidation state?

Which transition elements exhibit +8 oxidation state

VMC MODULES ENGLISH-JEE Main Revision Test-20 | JEE-2020 -CHEMISTRY

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  2. The correct match between list I and II is :

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  3. Why do transition elements shows variable oxidation states?

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  4. The correct order of reactivity of PhMgBr with underset((I))(Ph-unde...

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  5. B2H6 or (BH3)2 is an example of :

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  6. Match the metals (list I) with the coordination compound(s)/enzyme(s) ...

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  7. Zn|Zn^(2+)(c1M)||Zn^(2+)(c2M)|Zn. For this cell, DeltaG would be negat...

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  8. Which one of the following polymers may be classified as step growth p...

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  9. Thymine is held by two hydrogen bonds with the base :

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  10. The no. of atoms in 100g of a fcc crystal with density =10.0 g/cc ...

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  11. If for the heterogeneous equilibriumCaCO3(s) hArr CaO(s) +CO2(g) , ...

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  12. Which one of the following compound gives aspirin on reacting with ace...

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  13. If a reaction follows the Arrhenius equation, the plot lnk vs 1/RT giv...

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  14. The amphoteric oxide is :

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  15. The final product of the reaction :

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  16. The correct order of arrangement of the first ionization energies of ...

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  17. The polymer obtained from the following reactions is:

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  18. An example of aerosol is:

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  19. Clean water should have biochemical oxygen demand (BOD) up to:

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  20. Among the following statements the incorrect one is:

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