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D and F Block Elements question

2009 · Q106
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D and F Block Elements question

2009 · Q106

NEETChemistryD and F Block ElementsMCQ+4 / −1
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
  1. A
    3d54s1
  2. B
    3d54s2
  3. C
    3d24s2
  4. D
    3d34s2
View written solutionFree

Correct answer: B

All the given elements are d-block elements. For d-block element, it can lose its electrons from 3d and 4s subshell completely. Thus, the element which has higher number of electrons in 3d and 4s subshells exhibits largest number of oxidation states. Among the given options, 3d5 , 4s2 has maximum number of electrons that is, 5 + 2 = 7. Hence, it has largest number of oxidation states.

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