MCQ
Which one of the following is covalent molecule
- A$NaCl$
- ✓$BeCl_2$
- C$LiCl$
- D$RbF$
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Assertion $A$ :Magnesium can reduce $Al _{2} O _{3}$ at a temperature below $1350^{\circ} C$, while above $1350^{\circ} C$ aluminium can reduce $MgO$.
Reason $R$ : The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements. choose most appropriate answer from the options given below
Reason : Inert gases have stable configuration.