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NEET2008ChemistryStructure of AtomActual

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 10⁻¹⁸ ~g ~cm ~s ⁻¹ . The uncertainty in electron velocity is, (mass of an electron is 9 10⁻²⁸ ~g )

Options

  1. A1 10¹¹ ~cm ~s ⁻¹
  2. B1 10^9 ~cm ~s ⁻¹
  3. C1 10^6 ~cm ~s ⁻¹
  4. D1 10^5 ~cm ~s ⁻¹

Correct answer

B. 1 10^9 ~cm ~s ⁻¹

Step-by-step solution

aligned & p=1 10⁻¹⁸ ~g ~cm ~s ⁻¹ & or p= m v & or v= p ~m = 1 10⁻¹⁸ 9 10⁻²⁸ 1 10^9 ~cm / second aligned

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