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# The correct order of reducing abilities of hydrides of V group elements is

$\begin {array} {1 1} (1)\;NH_3 < PH_3 < AsH_3 < SbH_3 < B_iH_3 & \quad (2)\;NH_3 > PH_3 > AsH_3 > SbH_3 > B_iH_3 \\ (3)\;NH_3 < PH_3 > AsH_3 > SbH_3 > B_iH_3 & \quad (4)\;SbH_3 > BiH_3 > AsH_3 > NH_3 > PH_3 \end {array}$
Can you answer this question?

$(1)\;NH_3 &lt; PH_3 &lt; AsH_3 &lt; SbH_3 &lt; B_iH_3$
answered Nov 7, 2013 by