Which of the following is most stable?

Question

Which of the following is most stable? (A) Na3N (B) Rb3N (C) Li3N (D) K3N

Tardigrade Admin · Accepted Answer

Because of the diagonal relationship of Li and Mg, lithium forms a nitride like magnesium while other alkali metals do not. 6Li(s) + N2(g) xrightarrowΔ 2Li3N(s)

Q. Which of the following is most stable?

$N a_{3} N$

$R b_{3} N$

$L i_{3} N$

$K_{3} N$

Because of the diagonal relationship of $L i$ and $M g$ , lithium forms a nitride like magnesium while other alkali metals do not.
$6 L i_{(s)} + N_{2 (g)} Δ 2 L i_{3} N_{(s)}$

Q. Which of the following is most stable?

Na3​N

Rb3​N

Li3​N

K3​N

Because of the diagonal relationship of Li and Mg, lithium forms a nitride like magnesium while other alkali metals do not. 6Li(s)​+N2(g)​Δ​2Li3​N(s)​

$N a_{3} N$

$R b_{3} N$

$L i_{3} N$

$K_{3} N$

Because of the diagonal relationship of $L i$ and $M g$ , lithium forms a nitride like magnesium while other alkali metals do not.
$6 L i_{(s)} + N_{2 (g)} Δ 2 L i_{3} N_{(s)}$