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Please,please help me Zero group was introduced by

Zero group was introduced by

  • Option 1)

    Lothar Meyer

  • Option 2)

    Lockyer

  • Option 3)

    Mendeleev

  • Option 4)

    Ramsay

 
Answers (1)
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Noble Gas -

Each period ends with a noble gas of outermost electronic configuration  nsnp except  He.

- wherein

The electronic configuration of  He  is 1s2 

 

The group cantaining moles or inert gases named the zero group by scattish chemist william Ramsay. It was called so an act of the zero valency eschiluted by its elements.


Option 1)

Lothar Meyer

Incorrect

Option 2)

Lockyer

Incorrect

Option 3)

Mendeleev

Incorrect

Option 4)

Ramsay

Correct

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