MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPeriodic PropertiesPrevious Year Questions
The oxide of an element whose electronic configuration is 1s2, 2s2 2p6, 3s1 is (KCET 2009)
A.amphoteric
B.basic✓ Correct
C.acidic
D.neutral
Explanation
The given electronic configuration is 2 2 6 1 1s 2s 2p 3s (z =11) and the element is sodium. The oxides of sodium such as 2 2 2 Na O and NaO are basic in nature due to the high metallic character of sodium.
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