If the KE of electron is `2.5 xx 10^(-24)` J , then calculate its de-Broglie wavelength.

Explanation

To calculate the de-Broglie wavelength of an electron given its kinetic energy, we can follow these steps:

### Step 1: Understand the relationship between kinetic energy and velocity
The kinetic energy (KE) of a particle is given by the formula:
\[ KE = \frac{1}{2} mv^2 \]
where \(m\) is the mass of the particle and \(v\) is its velocity. We can rearrange this formula to solve for \(v\):
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