Question

the no. of electrons in 2g ions of nitrate ion is​

Answer 1

first calculate number of electron in nitrate ion NO3-

7 + 8 x 3 = 31 but - sign indicates addition of one more electron therefore total electron in niyrate ion = 32

Now , calculte the mass of nitrate ion 62 gm

okay,62 gm nitrante contains 6.02 x 10^23 ion

and 62 gm nitrate contain = 6.02 x 10^23 x 32 elextrons

1gm nitrate contain = 6.02 x 10^23 x 32 / 62 electrons

there fore number of electrons in 2 gm nitrate = 6.02 x 10^23 x 32 x 2/62 electrons

= 6.21 x 10^ 23 electeons