1800-150-456-789
FlagBACK
Flag Physical Chemistry> atomic structure...
question mark

assume that the potential energy of a hydrogen atom in its ground state is zero . then its energy in the first excited state will be

vikas srivastava , 14 Years ago
Grade 12
anser 1 Answers
SAGAR SINGH - IIT DELHI

Last Activity: 14 Years ago

Dear vikas,

r_n = {n^2\hbar^2\over Zk_e e^2 m_e}
The smallest possible value of r is called the Bohr radius and is equal to:
r_1 = {\hbar^2 \over (k_e e^2) m_e} = 0.529 \times 10^{-10} \mathrm{m}
The energy of the n-th level is determined by the radius:
E = -{k_e e^2 \over 2r_n } = - { (k_e e^2)^2 m_e \over 2\hbar^2 n^2} = {-13.6 \mathrm{eV} \over n^2}

We are all IITians and here to help you in your IIT JEE preparation.

All the best.

 If you like this answer please approve it....

win exciting gifts by answering the questions on Discussion Forum

Sagar Singh

B.Tech IIT Delhi

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on Physical Chemistry

question mark
Which of the following aqueous solutions remains neutral afterelectrolysis
Physical Chemistry
0 Answer Available

Last Activity: 2 Year ago(s)

question mark
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask andthe equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
Physical Chemistry
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
Physical Chemistry
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
Physical Chemistry
1 Answer Available

Last Activity: 2 Year ago(s)

question mark
A 100 cm cube solution of sodium carbonate is prepared by dissolving 8.653 g of salt in water the density of solution is 1.0816g per ml what are the molarity and molality of the solution.
Physical Chemistry
1 Answer Available

Last Activity: 2 Year ago(s)