MCQ
The bond angle between ${H - O -H}$ in ice is closest to
- A${120^o}28'$
- B${60^o}$
- C${90^o}$
- ✓${105^o}$
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$2{N_2}{O_5}\, \to \,4N{O_2}\, + \,{O_2}$
the rate of reaction is


Given [Molar mass $(AB_2) = 360$ ]
| Element | Ionization | enthalpy | $(kJ/mol)$ |
| $1^{st}$ | $2^{nd}$ | $3^{rd}$ | |
| $A$ | $899$ | $1757$ | $14847$ |
| $B$ | $737$ | $1450$ | $7731$ |
Which of the following statements is correct ?