Calculate the total number of electrons present in 1.4 g of dinitrogen gas.

Explanation

14 gms of `N_2` gas contains
` 6.023 xx 10^(23)` atoms
1.4 gms of N, gas contains
` 6.023 xx 10^(23) ` atoms
Each .N.atom contains 7 electrons.
` therefore `Number of electrons present in 1.4 gms of Nitrogen
` = 6.023 xx 10^(22) xx 7`
` = 42.161 xx 10^(22)`
` = 4.2161 xx 10^(23)` electrons