MCQ
Which one of the following oxide is covalent?
  • A
    $Cr _2 O _3$
  • B
    $CrO$
  • $Mn _2 O _7$
  • D
    $Na _2 O$

Answer

Correct option: C.
$Mn _2 O _7$
$Mn _2 O _7$

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