The lowest first ionization energy would be associated with which of the following configurations.

_______ scientist noticed that atomic weights of many pairs of elements which differed by eight or a multiple of eight exhibited similarities in their chemical properties.&nbsp;

To which block is related an element having electronic configuration&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><msup><mi mathvariant="normal">s</mi><mn>2</mn></msup><mn>2</mn><msup><mi mathvariant="normal">s</mi><mn>2</mn></msup><mn>2</mn><msup><mi mathvariant="normal">p</mi><mn>6</mn></msup><mn>3</mn><msup><mi mathvariant="normal">s</mi><mn>2</mn></msup><mn>3</mn><msup><mi mathvariant="normal">p</mi><mn>6</mn></msup><mn>3</mn><msup><mi mathvariant="normal">d</mi><mn>10</mn></msup><msup><mi>ns</mi><mn>1</mn></msup></math>

The electron gain enthalpy values of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">N</mi><mo>,</mo><mi mathvariant="normal">O</mi><mo>,</mo><mi mathvariant="normal">S</mi></math>&nbsp;and&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>Cl</mi></math>&nbsp;are

&nbsp;LIST - 1A) AerogensB) Representative elementsC) Transition elementsD) Inner transition elementsLIST - 21) Form bonds by gaining, losing or sharing of electrons2) All are present in atmosphere mainly3) Common oxidation state of +34) &nbsp;elements of longest periods5) General configuration&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>ns</mi><mrow><mn>1</mn><mo>-</mo><mn>2</mn></mrow></msup><mo>(</mo><mi mathvariant="normal">n</mi><mo>-</mo><mn>1</mn><mo>)</mo><msup><mi mathvariant="normal">d</mi><mrow><mn>1</mn><mo>-</mo><mn>10</mn></mrow></msup></math>The correct match is &nbsp;

The chemical formula of white vitriol is

The lowest first ionization energy would be associated with which of the following configurations.

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