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Transition metals exhibit variable oxida...

Transition metals exhibit variable oxidation states. It is because of

A

The smaller atomic radius

B

The higher nuclearcharge

C

High screening effect

D

the energy difference between `(n-1)d` & ns-subshell is very less

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The correct Answer is:
D
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NARAYNA-PERIODIC TABLE -All Questions
  1. The atomic number of an element 'X' is 34. Then it is present in peri...

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  2. The position of element with Z=24 in the periodic table is

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  3. Transition metals exhibit variable oxidation states. It is because of

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  4. The following is the reason for the periodicity in the properties of e...

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  5. The largest atom among the following is

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  6. Atom loses electrons and becomes

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  7. Al^(3+) has low ionic radius than Mg^(2+) because

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  8. Largest particle among the following is

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  9. The increasing order of the ionic radii of the given isoelectronic spe...

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  10. Which of the following is the smallest cation?

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  11. Which of the following is the biggest ion?

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  12. Na^(+), Mg^(2+), Al^(3+), and Si^(4+) are isoelectronic ions. Their io...

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  13. Atomic radius depends upon

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  14. Among elements with the following electromic configurations, the one w...

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  15. Lanthanoid contraction is caused due to:

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  16. A reduction in atomic size the increases in atomic number is a charact...

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  17. Identify the correct order in which the ionic radius of the following ...

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  18. The radii of F,F^(-),O and O^(-2) are in the order of

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  19. Of the folowing, the one with largest size is

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  20. The order of decreasing atomic radii for Be, Na & Mg is

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