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Question

Electronic configuration of argon is:

A
2, 8, 1
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B
2, 8, 8
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C
2, 8, 2
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D
2, 8
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Solution

The correct option is B 2, 8, 8
  • The atomic number of argon is 18.
  • Number of electrons in K-shell is 2
  • Number of electrons in L-shell is 8
  • Number of electrons in M-shell is 8
  • So, the electronic configuration of argon is 2,8,8.
Therefore, the correct option is c.

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