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# The number of sigma and pi bonds in peroxodisulphuric acid are , respectively

$\begin {array} {1 1} (1)\;9\; and\; 4 & \quad (2)\;11\;and\;4 \\ (3)\;4\;and \; 8 & \quad (4)\;4\;and \;9 \end {array}$

(2) 11 and 4