A metal is known to have a BCC structure and an atomic radius of 0.157 rm. Deter

Question

A metal is known to have a BCC structure and an atomic radius of 0.157 rm. Determine the lattice parameter of this metal in meters. (answers format X.XXEX) Note this is a calculation-based question. Play attention to the specified answer format and units here. Hopefully you realize that the answer should be a very small length in meters, so we're using scientific notation to report the value this time. Remember that for scientific notation, we need to format our answer so that there is a single digit to the left of the decimal Doing this well set the value of the exponent, if your answer requires a negative exponent for these types of questions (much as 1.2 times 10^-10 meters), you should include the negative sign in your entry ... so type 1.2E - 10 Blackboard will not accept a value of 12 times 10^-11, for instance, because it i9s checking against algorithm values that were calculated in a specific format.

Explanation / Answer

Lattice parameter is the atoms in contact along face diagonal

4r = a(3)1/3

a = 4(0.157) /(2)1/3= 0.498 nm = 0.498 * 10^-9 m Ans.

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