EASYMCQ SINGLEJEE Advanced ChemistryInorganic ChemistryMole conceptLaw of chemical combination, atomic & molecular mass, mole concept, calculations
If NA is Avogadro’s number, then the number of valence electrons in 4.2 g of nitride ion () is (Given One atom of N has 5 valence electrons)
A.[object Object]✓ Correct
B.[object Object]
C.[object Object]
D.[object Object]
Explanation
This question uses avogadro's number, atomic structure & atomic mass. Convert all given quantities into moles using n = given amount/molar mass, use Avogadro's number where needed to get particles, and then compare with the options; this matches option A.
Avogadro's numberAtomic structure & atomic mass
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