Which of the following statement is about `Cr_(2) O_(7)^(-)` sturcture?

Options

A. It has neither `Cr - Cr` bonds nor `O - O` bonds
B. It has one `Cr - Cr` bond and seven `Cr - O` bonds
C. It has one `Cr - Cr` bond and six `O - O` bonds
D. It has no `Cr - Cr` bonds and has six `O - O` bonds

Answer

A

Explanation

The green magnate is paramagnetic with one uparied electron but the permanganate is diamagnetic.