<p>The first orbital of H is represented by:<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#968;</mi><mo>&#160;</mo><mo>=</mo><mo>&#160;</mo><mfrac><mn>1</mn><msqrt><mi>&#960;</mi></msqrt></mfrac><msup><mfenced><mfrac><mn>1</mn><msub><mi>a</mi><mn>0</mn></msub></mfrac></mfenced><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msup><msup><mi>e</mi><mrow><mo>-</mo><mi>r</mi><mo>/</mo><msub><mi>a</mi><mn>0</mn></msub></mrow></msup></math>, where&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>a</mi><mn>0</mn></msub></math>&nbsp;is Bohr&#39;s radius. The probability of finding the electron at a distance r, from the nucleus in the region dV is:&nbsp;</p>

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