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Question : 92 of 150
Marks:
+1,
-0
Solution:
- Metals form basic oxide while Non-metals can form acidic oxides in general.
- Generally, Metals can have 1 to 3 electrons in their outermost shell and Non-metals have 4 to 8 electrons in the outermost shell.
- The electronic configuration of given elements are
- So element with Atomic number 20 (Calcium) having configuration 2, 8, 8, 2 is Metal and it will form a Basic oxide.
- Rest three elements having atomic numbers, 7(N), 17 (Cl) and 6 (C) are Non-metals and hence they form Acidic oxides.
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