Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Recent questions tagged atoms
+2
votes
1
answer
State Bohr’* postulates, obtain the expression for the total energy of the electron in the stationary states of the hydrogen atom.
asked
Apr 6, 2019
in
Class 12
by
kratos
class-12
atoms
cbse
+2
votes
1
answer
Describe the Activity (decay rate) and its units.
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
jee
jee mains
class-12
atoms
nuclei
+2
votes
1
answer
Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
aiims
jee
jee mains
class-12
atoms
nuclei
+3
votes
1
answer
A nucleus disintegrates into two nuclear parts which have their velocities in the ratio 2 : 1.
asked
Apr 6, 2019
in
JEE
by
kratos
jee
molecules and nuclei
jee mains
atoms
nuclei
+3
votes
1
answer
(i) State Bohr'* quantization condition for defining stationary orbits. How does de Broglie hypothesis explain the stationary orbits ?
asked
Apr 5, 2019
in
Class 12
by
kratos
class-12
atoms
cbse
+1
vote
1
answer
Which of the following radiation is most penetrating? (a) α–particles (b) β-particles (c) ϒ -radiation (d) X-rays
asked
Apr 5, 2019
in
Physics
by
kratos
neet
class-10
icse
atoms
nuclear physics
nuclei
+2
votes
1
answer
Determine Bohr'* radius of Li^2+ ion for n = 2. Given (Bohr'* radius of H-atom = a0)
asked
Apr 4, 2019
in
JEE
by
kratos
cbse
jee main 2020
jee main 2021
jee
atomic structure
jee mains
jee main
class-12
atoms
nuclei
+2
votes
1
answer
How does the spectrum emitted by rarefied gases different from those dense gases?
asked
Apr 4, 2019
in
Class 12
by
kratos
neet
jee
molecules and nuclei
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
The volume of water in the Great Lakes is 5000 cubic mile. Calculate the amount of energy released if all the deuterium atoms
asked
Apr 4, 2019
in
Class 12
by
kratos
neet
jee
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
The small binding energy of the deuteron (2.2 MeV) implies that the maximum of U(r) **** just inside the range R of the well.
asked
Apr 4, 2019
in
JEE
by
kratos
jee
jee mains
class-12
atoms
quantum mechanics
nuclei
+2
votes
1
answer
According to Bohr’* theory, the minimum energy required to remove an electron from the ground state of doubly ionized Li atom (Z = 3) is
asked
Apr 4, 2019
in
JEE
by
kratos
upsee
jee
jee mains
class-12
atoms
nuclei
+3
votes
1
answer
Calculate (a) the wavelength and (b) the frequency of the Hβ line of the Balmer series for hydrogen.
asked
Apr 4, 2019
in
Physics
by
kratos
neet
modern physics
jee
aiims
jee mains
class-12
atoms
+3
votes
1
answer
A He^+ ion is in its first excited state. Its ionization energy is :
asked
Apr 4, 2019
in
Class 12
by
kratos
neet
jee mains 2019
atoms
nuclei
+3
votes
1
answer
A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?
asked
Apr 4, 2019
in
JEE
by
kratos
cbse
jee
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is
asked
Apr 3, 2019
in
Class 12
by
kratos
neet
cbse
class-12
atoms
nuclei
+1
vote
1
answer
Name one ion for each of the valencies +1, +2 and +3.
asked
Apr 3, 2019
in
JEE
by
kratos
coordination compounds
structure of the atom
molecules
jee
class-9
class-7
icse
class-10
jee mains
atoms
periodic classification of elements
+1
vote
0
answers
Write the expression for energy of an electron in electron orbit of hydrogen atom.
asked
Apr 3, 2019
in
Class 12
by
kratos
class-12
cbse
atoms
+3
votes
1
answer
What is meant by half life of radioactive element.
asked
Apr 3, 2019
in
Class 12
by
kratos
neet
cbse
jee
jee mains
class-12
atoms
nuclei
+3
votes
1
answer
An α-particle is bombarded on 14N. As a result, a 17O nucleus is formed and a particle is emitted.This particle is a
asked
Apr 3, 2019
in
Physics
by
kratos
neet
modern physics
jee
the nucleus
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neutrons and 1 proton.
asked
Apr 3, 2019
in
Physics
by
kratos
modern physics
jee
ntse
jee mains
class-12
atoms
nuclear physics
nuclei
To see more, click for the
full list of questions
or
popular tags
.