Question

an element with atomic number will form a basic oxide 7, 17,14,11

Answer 1

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The element with atomic no. 11 will form a basic oxide.

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Answer 2

Answer:

Explanation:

Non-metals can form acidic oxides in general. Non-metals have 4 to 8 electrons in the outermost shell. Whereas, if electrons in the outermost shell is from 1-3 (metals) form basic oxides.

The electronic configuration of given elements are

(a) i.e., 7 = 2, 5                   (b) i.e., 17 = 2, 8,7                  

(c) i.e., 14= 2, 8, 4           (d) i.e., 11 = 2, 8, 1.

So, element with atomic number 11 (electronic configuration 2, 8,1) which is metal (Na) will form basic oxide.