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Question
Consider the following schematic atomic structures of given four elements:
A 
B
C 
D 
Which of the given elements is a noble gas?
Consider the following schematic atomic structures of given four elements:
A BC D
Which of the given elements is a noble gas?
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Solution
The correct option is D
D
The elements which have 8 electrons in the outermost shell or in the valence shell are known as noble gases.
A 
Electronic configuration: 2, 8, 9
It is an incorrect representation as the outermost shell cannot accommodate more than 8 electrons.
B 
Electronic configuration: 2, 8, 7
It is the representation of the chlorine element.
C 
Electronic configuration: 2, 8, 6
It is the representation of the sulphur element.
D 
Electronic configuration: 2, 8, 8
It is the representation of the argon element, which is a noble gas.
Hence, the correct answer is option (d).
D
The elements which have 8 electrons in the outermost shell or in the valence shell are known as noble gases.
A
Electronic configuration: 2, 8, 9It is an incorrect representation as the outermost shell cannot accommodate more than 8 electrons.
B
Electronic configuration: 2, 8, 7
It is the representation of the chlorine element.
C
Electronic configuration: 2, 8, 6It is the representation of the sulphur element.
D
Electronic configuration: 2, 8, 8
It is the representation of the argon element, which is a noble gas.
Hence, the correct answer is option (d).
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