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साइक्लो ट्राइमेटाफ़ॉस्फ़ोरिक अम्ल में फास्फोरस की ऑक्सीकरण अवस्था होगी :
A. `+3`
B. `+5`
C. `-3`
D. `+2`

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Correct Answer - B
`(HPO_(3))_(3)` में P की ऑक्सीकरण संख्या
`3[+1+a+3(-2)]=0` या `a-6+1=0 rArr a=+5`

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