Chemistry-
General
Easy

Question

An ion which has 18 electrons in the outermost shell is

  1. (a) K to the power of plus end exponent   
  2. C a to the power of 2 plus end exponent   
  3. (c) N a to the power of plus end exponent   
  4. C u to the power of plus end exponent  

The correct answer is: C u to the power of plus end exponent

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