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  • Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm ?Option: 1 108</di

Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm ?

Option: 1

108


Option: 2

128


Option: 3

157


Option: 4

181


Answers (1)

best_answer

Copper crystallises in a face-centred cubic lattice with a unit cell length of 361 pm. 

In FCC, the atom at the face centre will be in touch with the other two atoms diagonally arranged. 

So, 

\mathrm{\textup{Radius of Copper atom} = \frac{361}{2\sqrt{2}}\ pm}

\mathrm{\textup{Radius of Copper atom} = 128\ pm}

Therefore, the correct option is (2).

Posted by

shivangi.shekhar

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