What is the no. of atoms per unit cell (z) in a body -centred cubic st

1.	What is the no. of atoms per unit cell (z) in a body -centred cubic strcuture ?
Answer» In a body- centred cubic structure : `z=1+1=2` Each of the eight corner atoms will contribute only one atom per unit cell. Cell atom contributes only one atom per unit cell.

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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)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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What is the no. of atoms per unit cell (z) in a body -centred cubic strcuture ?

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