MCQ
The group having triangular planar structures is
- A$BF_3, NF_3, CO_3^{2 - }$
- ✓$CO_3^{2 - } , NO_3^- , SO_3$
- C$NH_3, SO_3, CO_3^{2 - }$
- D$NCl_3, BCl_3, SO_3$
| Group | Hybridization | Shape |
|
$(1)$ $BF_3$ $NF_3$ $CO_3^{2-}$ |
$sp^2$ $sp^3$ $sp^2$ |
Triangular Planar $(TP)$ Tetrahedral $(T)$ $T.P.$ |
|
$(2)$ $CO_3^{2-}$ $NO_3^-$ $SO_3$ |
$sp^2$ $sp^2$ $sp^2$ |
$\left. \begin{gathered} T.P. \hfill \\ T.P. \hfill \\ T.P. \hfill \\ \end{gathered} \right\}$ (all have same hybridization) |
|
$(3)$ $NH_3$ $SO_3$ $CO_3^{2-}$ |
$sp^3$ $sp^2$ $sp^2$ |
$T$ $T.P.$ $T.P.$ |
|
$(4)$ $NCl_3$ $BCl_3$ $SO_3$ |
$sp^3$ $sp^2$ $sp^2$ |
$T$ $T.P.$ $T.P.$ |
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$4C{a_5}{(P{O_4})_3}F + 18Si{O_2} + 30C \to 3{P_4} + 2Ca{F_2} + 18CaSi{O_3} + 30CO$
${H_{2(g)}} + {I_{2(g)}}$ $\rightleftharpoons$ $2H{I_{(g)}}$
$N{H_3} + {H_2}O \to NH_4^ + + O{H^ - }$ is
${I_2}(g)$ $\rightleftharpoons$ $2I(g),\;\Delta H_r^o(298\,K) = + 150\;kJ$
$CO(g) + \frac{1}{2}{O_2}(g)\, \to \,C{O_2};\,\,\,\Delta H = 135.2\,kcal$
Then heat of formation of $CO(g)$ is .....$ kcal$