1.

The mass of 1 mole of electrons is            [Pb. CET 2004]

A.                 \[9.1\times {{10}^{-28}}g\]         
B.                 \[1.008\,mg\]
C.                 \[0.55\,mg\]      
D.                 \[9.1\times {{10}^{-27}}g\]
Answer» D.                 \[9.1\times {{10}^{-27}}g\]


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