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Question

The given diagram shows the structure of atom with 10 protons and 10 neutrons. Electrons are in their respective shells and the electronic configuration is 2,8. Which element does the diagram represent?

A
Silicon
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B
Neon
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C
Sodium
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D
Magnesium
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Solution

The correct option is B Neon
Silicon has an electronic configuration of 2,8,4 whereas sodium has 2,8,1 and magnesium have 2,8,2. Neon has an electronic configuration of 2,8 which belongs to an inert gas, that is group 18 element. So the correct answer is neon.

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