MEDIUMMCQ SINGLENEET ChemistryInorganic 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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