Assertion : Ortho boric acidcrystal are hard and cannot be broken eassilyinto the powder form. Reason :In the solid state B(OH)_(3) unitsare hydrogen bonded togather into twodimensional sheets.

Assertion : Ortho boric acidcrystal are hard and cannot be broken eass

1.	Assertion : Ortho boric acidcrystal are hard and cannot be broken eassilyinto the powder form. Reason :In the solid state B(OH)_(3) unitsare hydrogen bonded togather into twodimensional sheets.
Answer» If both assertion and reason are TRUE and the reason is the CORRECT explanationof the assertion. If both assertion and reason are true but reason is not the correct explanation of the assertion. If assertion is true but reason is false. If assertion is false but reason is true. Solution :In the solid state , the `Be(OH)_(3)` units are HYDROGEN bonded together into two dimensional sheet with almosthexagonal symmetry .The layered are QUITE a largedistanceapart `(3,18 Å)`and thus the crystal breks quite EASILY into into very first particles.