The characteristic properties of transition elements are due to
A
unpaired electrons in d-sub shell
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B
d – orbitals have five fold degeneracy
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C
presence of 2 modal planes for d – orbital
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D
because they belong to d – block
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Solution
The correct option is Aunpaired electrons in d-sub shell The special properties of transition elements due to presence of unpaired electrons in d-orbitals.