The number of replaceable hydrogen in phosphorus acid is ________

Dehydration of conc. nitric acid with P4O10 yields __________.


Nitrogen pentoxide
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Ammonia is basic while phosphine is ___________ towards litmus.

neutral

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In P4O10, the number of oxygen atoms bonded to each phosphorus atom is _________.

Four

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The number of replaceable hydrogen in phosphorus acid is ________.


Two

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The basicity of phosphorus acid (H3PO3) is  _____________.


Two

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