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Read carefully the passage and select the correct answer out of given four options:Transition elements show variable oxidation states. This is due to their valence electrons which are found in two different orbitals i.e., ns and (n-1)d. Up to (+II) oxidation state ns electrons are involved, but in higher oxidation states, electrons of (n-1)d sun-shells are involved.The cause of variable oxidation state among transition elements is(a) they all exist in more than one oxidation state(b) they all form complex compounds(c) the valence electrons of them are found in two different sub-shells(d) they all have paired sub-shells |
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Answer» Answer (c) the valence electrons of them are found in two different sub-shells |
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