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Ph3 and pf3  are pyramidal in shape with one lone pair on p but the greater bond angle is due to the resonance in pf3 leading to partial double bond
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Both PH3 and PF3 are pyramidal in shape with one long pair on p.but PF3 is having greater bond angle than PH3 because resonance in PF3 , leading topartial double bond character.as a result repulsions between P-F bonds are large and hence bond angle is large.
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