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In a given transition series the element...

In a given transition series the elements differ generally in the number of electrons of

A

p

B

d

C

p, d & f

D

p & d

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The correct Answer is:
B
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The transition element ( with few exceptions ) show a large number of oxidation states . The various oxidation states are related to the electronic configuration of their atoms. The variable oxidation states of a transition metal is due to the involvement of (n-1)d and outer ns electrons . For the first five elements of 3d transition series , the minimum oxidation state is equal to the number of electrons in 4s shell and the maximum oxidation state is equal to the sum of 4s and 3d electrons. The relative stability of various oxidation states of a given element can be explained on the basis of stability of d^(0),d^(5) and d^(10) configuration . In 3d series, the maximum oxidation state is shown by

The atomic radii of transition series elements

The number of transition series is:

(a). Why second asnd third transition series elements show similar size? (b). Why electronic configuration of lanthanoids not known with certainty? (c). The electronic configuration of actinide elements are not known with certainty. Explain. (d). Why there is similarties (horizontal and vertical) in successive members of the transition series?

Comments on the statement that elements of the first transition series posses many properties different from those of heavier transition elements.

NARAYNA-PERIODIC TABLE -All Questions
  1. An atom with atomic number 21 belongs to the category of

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  2. Which of the following is general is general electron configuration of...

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  3. In a given transition series the elements differ generally in the numb...

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  4. Transition elements are placed in the periodic table between the group

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  5. Regarding transitional elements the wrong statement is

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  6. The electron configuration of the element 'M' is [Ar] 3d^(10) 4s^(2) 4...

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  7. Which of the following is the smallest in size?

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  8. The correct order of atomic radii is

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  9. The element with the following atomic number may be bigger than alumin...

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  10. Which among the following group elements are smaller in size

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  11. Which of the following is an example of a positive ion and negative io...

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  12. The ionization potential (I(1)) of nitrogen (Z=7) is more than oxygen ...

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  13. Second ionization potential value is very low for

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  14. I(1) of an element X is 899" kJ mole"^(-1) and that of another element...

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  15. The first ionisation potential in electron volts of nitrogen and oxyge...

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  16. The second ionisation energy of N and O in electron volt are respectiv...

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  17. The first ionisation potential of Na,Mg,Al and Si are in the order

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  18. Electrons which have the highest penetrating power through lower orbit...

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  19. A sudden large jump between the values of second and third ionisation ...

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  20. The atomic number of vanadium (V), chromium (Cr), manganese (Mn) and i...

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