Question

Total number of electrons present in 1.6 g of CHA
(1) 6.022 x 1023 electrons
(2) 6.023 x 1024 electrons
(3) 10 electrons
(4) 1 electron​

Answer 1

if it is CH4 ...then

1.6 g CH4 is .1 mole CH4

as mole=given mass/molecular mass

hence we have .1 mole CH4

as C has 6 electrons and 4 H have 4 electrons hence we have total of 10 elctrons in a molecule

So now we need to see how many molecules we have

we have .1 mole i.e, 6.022×10*23 ×.1 molecules

=6.022×10*22 molecules

thus total electrons= 6.022 ×10*22×10=6.022 x 10*23

hence option :2 must b correct