A) \[6.023\times {{10}^{23}}g\]
B) 1.008 g and 0.55 mg
C) \[9.1\times {{10}^{-28}}kg\]
D) 2 g
Correct Answer: B
Solution :
Mass of a proton \[=1.673\times {{10}^{-24}}g\] \[\therefore \] Mass of one mole of proton \[=1.673\times {{10}^{-24}}\times 6.02\times {{10}^{23}}\] \[=10.07\times {{10}^{-1}}\] = 1.008 g Mass of an electron \[=9.1\times {{10}^{-28}}g\] \[\therefore \] Mass of one mole of electron \[=9.1\times {{10}^{-28}}\times 6.02\times {{10}^{23}}\] \[=54.78\times {{10}^{-5}}g=0.55\,\,mg\]
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