MCQ
The bond angle and hybridization in ether $(CH_3OCH_3)$ is
- A$106^o51',\, sp^3$
- B$104^o31',\, sp^3$
- ✓$>\,109^o28',\, sp^3$
- DNone of these
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which is correct statement
$\mathrm{A}$ and $\mathrm{Y}$ are respectively
$(A)\,\,\,\,[Ni(H_2O)_5NH_3]^{2+},$
$(B)\,\,\,\,[Ni(H_2O)_4(NH_3)_2]^{2+}$ and
$(C)\,\,\,\,[Ni(H_2O)_3(NH_3)_3]^{2+}$ is
The heat of the reaction $2Mg + Si{O_2} \to 2MgO + Si$ is......$kJ$