Which of the following statements is incorrect?
(A) ZnO is an amphoteric oxide
(B) d-block elements show variable oxidation state due to
partially filled d-subshell
(C) Cause of colour in K, Cr,0, is charge transfer from
Oto O.
(D) d-block elements and compounds show catalytic
properties because d-block elements can show
variable oxidation state
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Answer:
(a) Zno is an amphoteric oxide
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