| Compound | Geometry |
| (A) $BF _3$ | Trigonal planer |
| (B) $PCl _5$ | Trigonal bipyramidal |
| (C) $SF _6$ | Square planer |
| (D) $BeCl _2$ | Linear |
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Choose the correct answer from the options given below:
|
List-$I$ (Molecule) |
List-$II$. (Number and types of bond/s between two carbon atoms) |
| $A$. ethane | $I$. one $\sigma$-bond and two $\pi$-bonds |
| $B$. ethene | $II$. two $\pi$-bonds |
| $C$. carbon molecule, $\mathrm{C}_2$ | $III$. one $\sigma$-bond |
| $D$. ethyne | $IV$. one $\sigma$-bond and one $\pi$-bond |
Choose the correct answer from the options given below:
(Plank's const. $ h = 6. \times 10^{-34}\, Js\,;$ mass of electron $= 9.1091 \times 10^{-31}\, kg\,;$ charge of electron $e= 1.60210 \times 10^{-19}\, C\,;$ permittivity of vaccum $\epsilon _0 = 8.854185 \times 10^{-12} \,kg^{-1} \,m^{-3} A^2$)
${C_6}{H_6}(l)\, + \,\frac{{15}}{2}\,{O_2}(g)\, \to \,6\,C{O_2}(g)\, + \,3{H_2}O\,(g)$
Signs of $\Delta H,\,\Delta S$ and $\Delta G$ for the above reaction will be