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KCET2014ChemistryChemical Kinetics

Among the elements from atomic number ( 1 ) to ( 36 ),the number of elements which have an unpaired electron in their s-subshell is

Options

  1. A( 7 )
  2. B( 09 )
  3. C( 04 )
  4. D( 06 )

Correct answer

D. ( 06 )

Step-by-step solution

Between atomic number ( 1 ) to ( 36 ) only ( 3 ) alkali metals, hydrogen atom and ( 2 ) d-block elements (i.e., to make most stable electronic configuration) appears which have an unpaired electron in their s-subshell. Therefore, total ( 6 ) elements, that is, ( H , Li , Na , K , Cr ) and ( Cu ) between atomic number ( 1 ) to ( 36 ) appears.

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