MCQ
Which particle may be removed from a stable neutral atom with least energy change :
- AAn $\alpha$ particle
- BA neutron
- CA proton
- ✓An electron
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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
[Atomic masses (in $u$) $Mn =55 ; Cl =35.5 ; O =16, I =127, Na =23, K =39, S =32]$