1.

The main oxides formed on combustion of \[Li,\text{ }Na\] and K in excess of air are, respectively:

A. \[L{{i}_{2}}{{O}_{2}},N{{a}_{2}}{{O}_{2}}\] and \[K{{O}_{2}}\]
B. \[L{{i}_{2}}O,N{{a}_{2}}{{O}_{2}}\]and \[K{{O}_{2}}\]
C. \[L{{i}_{2}}O,N{{a}_{2}}O\] and \[K{{O}_{2}}\]
D. \[Li{{O}_{2}},N{{a}_{2}}{{O}_{2}}\]and \[{{K}_{2}}O\]
Answer» C. \[L{{i}_{2}}O,N{{a}_{2}}O\] and \[K{{O}_{2}}\]


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