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Draw a neat labelled diagram of the setup in the Davisson and Germer experiment for diffraction of electron waves. Calculate the mass defect of{:(59),(27):}Co which has a nucleus of mass58 . 933 u. |
Answer» Solution : Data : `m_(p) = 1.0078 u, m_(N) = 1.0087 u, m_(Co) = 58.933 `u For`{:(59),(27):}Co`A = 59, Z = 27 ` :. N = A - Z = 59 - 27 = 32` Themass DEFECT, `DELTAM = (Zm_(rho)+Nm_(n)) - m_(Co)` ` = (27 xx 1.0078 + 32 xx 1.00 87) - 58.933` ` = (27.2106 + 32.2784) - 58.933` ` = 59 .4890 - 58.933 = 0.556` u |
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