Story
NEET AITS
Story
Mock Tests
Story
Live Class
Story
JEE AITS

Questions  

An electron revolve round the nucleus of charge Ze. In order to excite the electron from state n=2 to n=3 the energy required is 47.2 eV. What is the value of Z ?

Unlock the full solution & master the concept.

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya
a
Z≡5
b
Z≡4
c
Z≡3
d
Z≡2

Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is A

Energy of H atom = 13.614-19=1.89eVZ2=47.21.89=24.47≡25⇒Z≡5
ctaimg

ctaimg

Similar Questions

In a sample of ions, a Li++ ion electron in first Bohr orbit is excited to a level by a radiation of wavelength λ. When the ion gets de-excited to the ground state in all possible ways (including intermediate emissions), a total of six spectral lines are observed. What is the value of λ ?

 (Given, h=6.63×1034Js,c=3×108ms1

Want to Improve your productivity
talk to our academic experts now !!

counselling
india
+91

whats app icon