Question

A non-metal in period 2 having electronic configuration 2,6







please tell me the correct answer ​

Answer 1

All period 2 elements completely obey the Madelung rule; in period 2, lithium and beryllium fill the 2s subshell, and boron, carbon, nitrogen, oxygen, fluorine, and neon fill the 2p subshell.

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Periodic trends.

Chemical element6CCarbonChemical seriesReactive nonmetalElectron configuration[He] 2s2 2p2

Physical Properties of Period 2 Elements

Elements to the left of period 2 are metals, those to the right are non-metals. The elements on the right, nitrogen, oxygen, fluorine and neon all have low melting points and are all non-metals.

Answer 2

A non-metal in period $2$ having electronic configuration $2,6$  is Oxygen.

Explanation:

• Non-metals are elements that gain electrons and are electronegative in nature.
• The elements that are present at the top right hand side of the periodic table are non-metals.
• These belong to the p block elements.
• Semimetals show both metallic and non-metallic character.
• Carbon,oxygen and sulphur are nonmetals that belongs to p block.
• Oxygen belongs to the second period and its atomic number is eight.
• Hence the electronic configuration of oxygen will be $2,6$.
• So the non-metal in period two having the given configuration is oxygen.