How will you distinguish between the following pairs of terms: (i) Tetrahedral and octahedral voids (ii) Crystal lattice and unit cell

How will you distinguish between the following pairs of terms: (i) Tet

1.	How will you distinguish between the following pairs of terms: (i) Tetrahedral and octahedral voids (ii) Crystal lattice and unit cell
Answer» (i)Tetrahedral voids: Surrounded by 4 speres which lie at the verticles of regular tetrahedron Octahedral void: surrounded by 6 speres and formmed by combination of 2 triangular voids of 1st and 2nt lager (ii) Crystal lattice : 3-Darrangement of particles in space unit cell : smallest unit of crystal lattice when repeated in different direction generates the entire lattice

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
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How will you distinguish between the following pairs of terms: (i) Tetrahedral and octahedral voids (ii) Crystal lattice and unit cell

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