Question

YOUVA
Date
1) Calculate
moving
the
with
Wavelength
a velocity
of
or
electre
2.05X (D​

Answer 1

mass of electron is 9.1 × 10^-31 kg

velocity of electron is 2.18 × 10^6 m/s ( in K shell of hydrogen atom )

$wavelength = \frac{h}{mv}$

where h is planck's constant (6.626×10^-34)

,m is mass and v is velocity.

$wavelength = \frac{6.626 \times {10}^{ - 34} }{9.1 \times {10}^{ - 31} \times 2.18 \times {10}^{6} } \\ wavelength = 3.2a {}^{o} (approx)$

Wavelength of electron is 3.2A° approximately (for hydrogen atom).

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