MCQ
Suitable reaction condition for preparation of Methyl phenyl ether is
- A$Ph - Br , MeO ^{-} Na ^{+}$
- B$PhO ^{-} Na ^{+}, MeOH$
- ✓$PhO ^{-} Na ^{+}, MeBr$
- DBenzene, MeBr

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Product $Z$ is
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$(I)$ $Be$ has smaller atomic radius compared to $Mg$
$(II)$ $Be$ has higher ionization enthalpy than $Al.$
$(III)$ Charge/radius ratio of $Be$ is greater than that of $Al$.
$(IV)$ Both Be and $Al$ form mainly covalent compounds.