Mass of \\\\(1\\\\) mole = \\\\(12\\,gm\\\\)Mass of \\\\(6.022 \ imes 10^{23}\\,atom = 12\\,gm\\\\)mass of \\\\(1\\\\) atom = \\\\(\\dfrac{12}{6.023 \ imes 10^{23}} = 1.993 \ imes 10^{-23}\\,gm\\\\)