Question

Q. The ratio of radius of 3rd and 4th bohr orbits in hydrogen atom is _____.

(A)3:4
(B)3:8
(C)9:16
(D)8:9

Answer 1

Answer:

Guys the answer is 9:16.

Explanation:

Use r = 0.529 x n2, where n is the number of orbits

Answer 2

Answer:

c)9:16

Explanation:

mvr= 4$\pi$/nh

On modifying the above expression, we get:

v=nh/4$\pi$mr------(1)

we know that v²=kZe²/mr-------(2)

so by squaring on both sides on equation (1) we get

v²=n²h²/16$\pi$²m²r²---------(3)

equating (2) and (3) we get

n²h²/16$\pi$²m²r²=kZe²/mr

r=n²h²/16$\pi$²mZe²k

here r∝n² so the ratio of radius of 3rd and 4th bohr orbits in hydrogen atom is  :

r4/r3=n4²/n3²

4²/3²=16/9

The ratio of radius of 3rd and 4th bohr orbits in hydrogen atom is 16/9

To know more about bhor model visit the links given below:

https://brainly.in/question/2125613

https://brainly.in/question/1101211

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