1.

In whichone of the following dpi - p pibond is present -

Answer»

<P>`NO_(3)^(-), NO_(2)^(-) , N^(3-), CN^(-)`
`P_(2)O_(3),P_(2)O_(4), PO_(4)^(3-)`
`NH_(3), PH_(3), BiH_(3)`
`CO,NO,CO_(2)

ANSWER :B


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