MCQ
Which of the following molecule has weakest $(p \pi - d \pi)$ back bonding ?
- ✓$OCl_2$
- B$N(SiH_3)_3$
- C$SiF_4$
- D$O(SiH_3)_2$
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$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$
