Question

Determine the total number of electrons in .142 gram of cl2​

Answer 1

Answer:

given =  mass = 142 gram

to find = no of electrons = ?

solution =

no of moles = $\frac{0.142}{71 }$ = 2× 10⁻³

no of molecules = 2 × 10 ⁻³ NA

total no of electrons = 34 × 2 ×10 ⁻³ ..(no of electron in Cl₄ are 34 electrons. )

                                =   68 × 10 ⁻³

                               = 0.068 electrons  

the number of electrons present in 142 gram of Cl2 are 0.068