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In a simple orthorhombic system two lattice points are connected through the translation vector T=2a+3b+4c,  where a=2Å, b=3Å and c=4Å

Physics Aug 27, 2020

In a simple orthorhombic system two lattice points are connected through the translation vector T=2a+3b+4c, 

where a=2Å, b=3Å and c=4Å. Determine the direction of the translation vector.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

 

 

601.450% Part (a) R? Correct! Part (b) 

Co source (which has a half-life of 5.2714 y) is labeled 4.00 mCi, but its present activity is found to be  × 107 Bq.

 What is the present activity in mCi? 

 = 0.378     

 How long ago did it actually have a 4.00 mCi activity in years? 

 

 

The distance between (111) planes in a face centred crystal is 2Å. Determine the lattice parameter and atomic 

diameter.

 

 

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