The no. of electrons in 2 gm ion of nitrate ion (NO3
-
) is
(A) 64 (B) 64NA (C) 32 (D) 32NA
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iti ruchi yu dil fy5 j c itdku
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The total number of electrons in a molecule of nitrate ion is = 7+3×8+1=32e−
Molar mass of nitrate ion is = 62g.
Total no. of moles in 2gm ion of nitrate ion = 262.
As we know that 1 mole of any compound contains 6.022×1023
atoms. Thus:
Total no. of molecules in 2gm ion of nitrate ion = 262×6.02×1023.
Total no. of electrons in 2gm ion of nitrate ion = 262×6.02×1023×32e−
So, the total number of electrons in 2g of nitrate ion is: =6.2×1023e−
Answer = 32
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