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The atomic number if vanadium (V), chrom...

The atomic number if vanadium (V), chromiun (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24 , 25, and 26 Which one of these may be expected pt have the highest second ionization enthalphy ?

A

Fe

B

V

C

Cr

D

Mn

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The correct Answer is:
A
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(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.

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MBD PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
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  2. The ions O^(2-) , Na^+ , F^- , Mg^(2+) and Al^(3+)are isoelectronic,Th...

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  3. The atomic number if vanadium (V), chromiun (Cr), manganese (Mn) and i...

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  4. Which one of the following groupinga represents a collection of isoele...

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  5. What is the characteristic valence shell configuration of coinage meta...

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  6. Which is an amphoteric oxide ?

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  7. The order of E.A of F, Cl, Br, and I is :

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  8. Which one of the following sets of ions represents a collection of iso...

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  9. Which of the following electronic comfigurations has the lowest ionosa...

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  10. Name the elements of group IA of the periodic table .

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  11. Which two element of the second period of the periodic table have both...

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  12. Which of the following has the smallest size ?

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  13. Which halogen shows only one oxidation number in its compounds ?

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  14. Whiuch of the following elements has the lowest electronegativity ?

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  15. Which of the following elements has the highest ionisation potential ?

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  16. Arrange the following in order of increasing electronegativity: S, CL,...

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  17. Arrange the following in order of increasing size: Cl, Cl^+ , Cl^-

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  18. Name any two element from d-block in long form of periodic table .

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  19. Which of the following has largest size ?

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  20. Which of the following has the small size ?

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