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P Block Elements question

2016 · Shift 1 · Q14
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P Block Elements question

2016 · Shift 1 · Q14

JEE AdvancedChemistryP Block ElementsMultiple correct+4 / −2
The crystalline form of borax has.
  1. A
    tetranuclear [B4O5(OH)4]2−[B_4O_5(OH)_4]^{2-}[B4​O5​(OH)4​]2− unit
  2. B
    all boron atoms in the same plane
  3. C
    equal number of sp2 and sp3 hybridised boron atoms
  4. D
    one terminal hydroxide per boron atom
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