A) neutral oxide
B) acidic oxide
C) basic oxide
D) amphoteric oxide
Correct Answer: D
Solution :
An element having electronic configuration\[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}},3{{p}^{1}}\]. Therefore, number of electrons present in this element are 13 and its atomic number is also 13. Hence, it is aluminium and it will form amphoteric oxide. Oxide of aluminium shows amphoteric nature, ie, it reacts with both acid and alkali. \[\underset{\begin{smallmatrix} aluminium \\ oxide \end{smallmatrix}}{\mathop{A{{l}_{2}}{{O}_{3}}}}\,\,\,+3{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}\underset{\begin{smallmatrix} aluminium \\ sulphate \end{smallmatrix}}{\mathop{A{{l}_{2}}{{(S{{O}_{4}})}_{3}}}}\,\,\,+3{{H}_{2}}O\] \[A{{l}_{2}}{{O}_{3}}+2NaOH\xrightarrow{{}}\underset{\begin{smallmatrix} sodium \\ meta \\ aluminate \end{smallmatrix}}{\mathop{2NaAl{{O}_{2}}}}\,\,+{{H}_{2}}O\]You need to login to perform this action.
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