Which of the following metaphosphate ion is not known to exist in free state?

Which of the following metaphosphate ion is not known to exist in free state?
  1. \(\mathrm{PO}_{3}^{-}\)
  2. \(\left(\mathrm{PO}_{3}ight)_{2}^{2-}\)
  3. \(\left(\mathrm{PO}_{3}ight)_{3}^{3-}\)
  4. \(\left(\mathrm{PO}_{3}ight)_{4}^{4-}\)

Solution

The free monometaphosphate ions does not exist. The metaphosphates form a family of ring compounds ,

Asked in: JEE-TOPICTESTS-CHEMISTRY

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