The H-P-H bond angle in PH3 is 93° but that in PH4+ is 109.5°. Why?
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The H-P-H bond angle in PH3 is 93° but that in PH4+ is 109.5°. Why?
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In PH4+, the HPH bond angle is tetrahedral angle of 109.5° . But in PH3, the lone pair-bond pair repulsion is higher than bond pair-bond pair repulsion. Thus, the bond angle becomes less than 109.5°.
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