A) It is non-stoichiometric and is metal deficient
B) It is a basic oxide
C) Its aqueous solution changes to\[Fe{{(OH)}_{3}}\]and then to\[F{{e}_{2}}{{O}_{3}}.{{({{H}_{2}}O)}_{n}}\]by atmospheric oxygen
D) It gives red colour with KCNS
Correct Answer: D
Solution :
Fe(lll) gives red colour with KCNS, hence option is incorrect.
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