1.

A metal forms hexagonal close-packed structure? How many voids are present in 0.5 mol of it?

Answer»

Solution :Number of ATOMS in 0.5 mol of the given metal = `3 xx 10^(23)`
If there are .N. atoms, number of tetrahedral VOIDS is .2n. and number of octabhedral voids is .n.
Number of tetrahedral voids present in 0.5 mol of metal `= 6 xx 10^(23)`
Number of octahedral voids present in 0.5 mol of metal `= 3 xx 10^(23)`
Total number of voids present in the given metal `= 9 xx 10^(23 )`


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