Login
Get Advice on Live Video Call
Earn $ Cash $ with
consultations on Bissoy App

A system of positron `(+1^(e^(0)))` and electron `(–1^(e^(0)))` is called Positronium atom. The radii of Positronium atom is expanded but energy level

Monjur Alahi

A system of positron `(+1^(e^(0)))` and electron `(–1^(e^(0)))` is called Positronium atom. The radii of Positronium atom is expanded but energy levels are reduced by a factor of x compared to H – atom.
(a) Find x
(b) Is it true to say that the entire spectrum of Positronium will be shifted towards longer wavelength compared to H – atom.


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - (a) `2` , (b) yes

0 like 0 dislike
1 views
If `13.6eV` energy is required to separate a hydrogen atom into a proton and an electron, then the orbital radius of electron in a hydrogen atom is

Correct Answer - A Here, `E=-13.6eV=-13.6xx1.6xx10^(-19)=-2.2xx10^(-18)J` `E=(-e^2)/(8piepsilon_0r)` `therefore` As orbital radius, `r=(-e^2)/(8piepsilon_0E)=(9xx10^(9)xx(1.6xx10^(-19))^2)/(2xx(2.2xx10^(-18)))=5.3xx10^(-11)m`.

2 Answers 1 views
An electron collides with a dfixed hydrogen atom in its ground stat. Hydrogen atom gets excited and the collding electron loses all its kinetic energy

Correct Answer - 2 Kinetic energy of electron `= 13.6 [1-1/9] eV = 12.1 eV`.

2 Answers 1 views
In an electron capture process, a nucleus captures an electron from K shell of the atom. The electron is having a binding energy of `B_(0)`. Followed

Correct Answer - `B_(0)`

2 Answers 1 views
Assume that an electron and a position pair is formed from a gamma ray photon having energy 3.0 MeV. Find the total kinetic energy of the positron and

Correct Answer - 1.98MeV.

2 Answers 3 views
Calculate the electric potential energy of an electron-proton system of an atom . The radius of the orbit of the electron is `21.16xx10^(-11)`m the ch

Correct Answer - `-1.088xx10^(-18)J`

2 Answers 1 views
A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of

Correct Answer - n=3

2 Answers 3 views
An electron in an excited hydrogen atom acquired an energy of 12.1 eV. To what energy level did it jump? How many spectral lines may be emitted in the

Correct Answer - `n=3;` 1025 Å, 6563 Å; 1215 Å

2 Answers 1 views
Calculate the separation of the particles and the binding energy of a positronium (an atom consisting of an electron and a position revolving around t

Correct Answer - 106 pm, 6.8 eV

2 Answers 1 views
Find the minimum energy that a `gamma`-ray must have to give rise to an electron -positron pair. `{:("Mass of electron",= 0.00055 am u,),("Mass of pos

Correct Answer - 1.024 MeV

2 Answers 1 views
Calculate the amount of energy set free by the annigilation of an electron and a positron. Given that mass of electron `= 0.00055` amu and positron =

Correct Answer - 1.0211 MeV

2 Answers 1 views

Log in to ask questions, provide answers, or leave comments.


Login

Install the Bissoy app to consult with a doctor.


Download