Question

What is the wavelength of an electron moving with a velocity of 7 1 2.0 10 ?​

Answer 1

Answer:

11th

Chemistry

Structure of Atom

Development Leading to Bohr's Model of Atom

The wavelength of an electr...

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Asked on November 22, 2019 by

Anja Waran

The wavelength of an electron moving with velocity of 10

7

ms

−1

is:

MEDIUM

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VIDEO EXPLANATION

ANSWER

According to de Broglie's equation, λ=

mv

h

Where, λ= de-Broglie wavelength and h=6.626×10

−34

Js=Planck's constant

m=mass of electron=9.1×10

−31

kg and v= velocity=10

7

m/s

upon substitution we get:

λ=

9.1×10

−31

×10

7

6.626×10

−34

×3600

λ=0.727×10

−10

=7.27×10

−11

m

Hence, the correct option is A

Explanation:

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