<p>Krypton&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML" class="wrs_chemistry"><mfenced><mmultiscripts><mi>Kr</mi><mprescripts/><mn>36</mn><mrow/></mmultiscripts></mfenced></math>&nbsp;has the electronic configuration&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML" class="wrs_chemistry"><mfenced open="[" close="]"><mmultiscripts><mi>Ar</mi><mprescripts/><mn>18</mn><mrow/></mmultiscripts></mfenced></math>,&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>4</mn><msup><mi>s</mi><mn>2</mn></msup><mn>3</mn><msup><mi>d</mi><mn>10</mn></msup><mn>4</mn><msup><mi>p</mi><mn>6</mn></msup></math>, the 37th electron will go into which of the following sub-shells?</p>