The total number of valence electrons in of ion is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
The total number of valence electrons in $4.2 \text{ g}$ of $N_3^-$ ion is:
Answer: B
💡 Solution & Explanation
$\text{Moles of } N_3^- = 4.2 / 42 = 0.1 \text{ mol}$. <br>Valence electrons in $N_3^-$: $3 \times 5 (\text{N}) + 1 (\text{charge}) = 16$. <br>Total $= 0.1 \times 16 \times N_A = 1.6 N_A$.
💬Ask on WhatsApp →
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes