Chemistry · Structure of atom
हिन्दीCalculate the uncertainty in velocity (\( \Delta v \)) of an electron if the uncertainty in its position (\( \Delta x \)) is \( 10^{-8} \text{ m} \). (Given: mass of electron \( m = 9.11 \times 10^{-31} \text{ kg} \), Planck's constant \( h = 6.626 \times 10^{-34} \text{ J s} \))
Correct answer · Option 4
\( 1.04 \times 10^5 \text{ m s}^{-1} \)
Explanation
Using Heisenberg's formula \( \Delta v = \frac{h}{4\pi m \Delta x} \), substituting the given values yields \( 1.04 \times 10^5 \text{ m s}^{-1} \).