Solve

Guides

0

You visited us 0 times! Enjoying our articles? Unlock Full Access!

Characteristics of Bohr's Atomic Model

Question

The radius of the first Bohr orbit is
$0.529 \times 10^{- 10} m$
$0.318 \times 10^{- 10} m$
None of these
$0.106 \times 10^{- 10} m$

A

0.106 \times 10^{- 10} m

B

0.318 \times 10^{- 10} m

C

None of these

D

0.529 \times 10^{- 10} m

Open in App

Solution

Verified by Toppr

Given, $47.2 e V$ is required to excite an electron from $n = 2$ to $n = 3$
$\Rightarrow \frac{13.6 Z^{2}}{4} - \frac{13.6 Z^{2}}{9} = \frac{5 \times 13.6 Z^{2}}{36} = 47.2$

$∴ Z^{2} = 24.99$

Was this answer helpful?

0

Similar Questions

Q1

The equivalent current due to motion of electron in first orbit of H-atom is (Velocity of electron at first orbit

= 2.18 \times 10^{6} m / s

,Radius

= 0.529 \times 10^{- 10} m

):

View Solution

Q2

What is the velocity of an electron

(m = 9.11 \times 10^{- 31} k g)

in the innermost orbit of the hydrogen atom?
(Bohr radius

= 0.529 \times 10^{- 10} m

).

View Solution

Q3

The circumference of first Bohr orbit is

3.32 \times 10^{- 10} m

. If this circumference represents one wavelength, what is the velocity of electron in this orbit?

View Solution

Q4

The moon orbits the earth once in 27.3 days in an almost circular orbit. Calculate the centripetal acceleration experienced by the earth? (Radius of the earth is 6.4×10×10×10×10 ×10×10 m )

View Solution

Q5

If the velocity of an electron in the first Bohr orbit of a hydrogen atom is 2.187691

\times

10

^{x}

m s

^{- 1}

, then value of

x

is :

[Given: Radius of first Bohr's orbit= 0.529

˚ A

]

View Solution