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The total number of valence electrons in...

The total number of valence electrons in `4. 2g` of ` N_3^-` ion are :

A

`1.6 N_A`

B

`3.2 N_A`

C

`2.1 N_A`

D

`4.2 N_A`

Text Solution

Verified by Experts

The correct Answer is:
A
42g of `N_3^-` ions have 16 `N_A` valence electrons 4.2 g of `N_3^-` ion have =`(16N_A)/42xx4.2=1.6 N_A`
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