1.

Write the formula of anoxoanion of manganese(Mn) in which it shows the oxidation state equal toits group number. or Writethe formulaof an oxoanion of chromium (Cr) in which it shows the oxidation state eqaul to its group number.

Answer»

SOLUTION :`MnO_(4)^(-)`(permanganate ion). Oxidation state of `Mn= +7`
Group NUMBER of Mn`=7`
`Cr_(2)O_(7)^(2-)` ( dichromate ion) . Oxidationstate of `Cr= + 6` Group number of Cr=6


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