Which of the following orbitals is not permitted in an atom?

The reaction in which&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="14px"><mrow><mi>ΔH</mi><mtext> </mtext><mo>=</mo><mtext> </mtext><mi>ΔE</mi><mtext> </mtext></mrow></mstyle></math>&nbsp;is

A reversible isothermal evaporation of 90g of water is carried out at&nbsp;100°C. heat of evaporation of water is 9.72 kcal/mol. Assuming water vapour to behave like an ideal gas, what is the change in internal energy of the system?

The relative charges of electron, proton, and neutron respectively are:&nbsp;

The orthocentre of the triangle formed by the lines x + 3y – 10 = 0 and&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>6</mn><msup><mi>x</mi><mn>2</mn></msup><mo>+</mo><mi>x</mi><mi>y</mi><mo>−</mo><msup><mi>y</mi><mn>2</mn></msup><mo>=</mo><mn>0</mn><mtext>  </mtext><mi>i</mi><mi>s</mi></math>

If&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>A</mi></math>&nbsp;is the orthocenter of the triangle formed by&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><msup><mi>x</mi><mn>2</mn></msup><mo>−</mo><msup><mi>y</mi><mn>2</mn></msup><mo>=</mo><mn>0</mn><mo>,</mo><mtext> </mtext><mi>x</mi><mo>+</mo><mi>y</mi><mo>−</mo><mn>1</mn><mo>=</mo><mn>0</mn><mtext> </mtext></math>,&nbsp;and&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>B</mi></math>&nbsp;is the centroid of the triangle formed by&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mtext> </mtext><mn>2</mn><msup><mi>x</mi><mn>2</mn></msup><mo>−</mo><mn>5</mn><mi>x</mi><mi>y</mi><mo>+</mo><mn>2</mn><msup><mi>y</mi><mn>2</mn></msup><mo>=</mo><mn>0</mn><mo>,</mo><mtext> </mtext><mn>7</mn><mi>x</mi><mo>−</mo><mn>2</mn><mi>y</mi><mo>−</mo><mn>12</mn><mo>=</mo><mn>0</mn><mo>,</mo></math>&nbsp; then the distance between&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>A</mi></math>&nbsp;and&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>B</mi></math>&nbsp;is

Which of the following orbitals is not permitted in an atom?

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