MCQ
In $Cr_2O_7^{-2}$ every $Cr$ is linked to
- ATwo $O-$ atoms
- BThree $O-$ atoms
- ✓Four $O-$ atoms
- DFive $O-$ atoms
✓
Answer
Correct option: C.
Four $O-$ atoms
c
In $Cr _2 O _7^{2-}$ ion, every chromium atom is linked to four oxygen atoms. Two chromium atoms are present at the centre with $Cr - O - Cr$ linkage and each chromium atom is bonded to three more oxygen atom.So, each chromium atom is bonded to four $O$ atom.
In $Cr _2 O _7^{2-}$ ion, every chromium atom is linked to four oxygen atoms. Two chromium atoms are present at the centre with $Cr - O - Cr$ linkage and each chromium atom is bonded to three more oxygen atom.So, each chromium atom is bonded to four $O$ atom.
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