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

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 void is surrounded by 4 constituent particles (atoms/molecules/ions). Octahedral voids is surrounded by 6 constituent particles (atoms/molecules/ions). OR Radius ratio (r⁺ /r^-) fo, tetrahedral void is 0.225 & radius ratio for Octahedral voids is 0.414. (ii) A regular three dimensional arrangement of point in space is called a crystal lattice. Unit cell is the smallest portion of a crystal lattice which, when repeated in three directions, generates an entire lattice/ unit cell is the miniature of crystal lattice/microscopic edition of the crystal lattice.

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

Answer»

(i) Tetrahedral void is surrounded by 4 constituent particles (atoms/molecules/ions).

Octahedral voids is surrounded by 6 constituent particles (atoms/molecules/ions).

Radius ratio (r⁺ /r^-) fo, tetrahedral void is 0.225 & radius ratio for Octahedral voids is 0.414.

(ii) A regular three dimensional arrangement of point in space is called a crystal lattice.

Unit cell is the smallest portion of a crystal lattice which, when repeated in three directions, generates an entire lattice/ unit cell is the miniature of crystal lattice/microscopic edition of the crystal lattice.

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