Which one of the following does Bohr theory fails to explain ?
Stability of hydrogen
Line spectra of hydrogen atom
Line spectra of Li2+
Splitting of spectral lines in the presence of magnetic field
Where does the cathode rays get deflected?
A magnetic field only
An electric field only
Both electric and magnetic field
None of these
An element 'm' has an atomic mass 27 and atomic number 13.How can its ion be represented ?
M3+
M2+
M+
M-
If λ1 and λ2 are the wave lengths of characteristic X - ray and gamma rays respectively then what is the relation between them ?
λ1 = λ2
λ1 > λ2
λ1 = 1/λ2
λ1 < λ2
Which orbit of He+ ion has h/π as its angular momentum of the electron ?
First
Second
Third
Fourth
The uncertainty in the position of a particle when the uncertainty in momentum is zero will be
6.626 × 10-34
4.14 × 10-35
Zero
Infinity
What is the Bohr radius associated with hydrogen atom ?
0.529 × 10-10 cm
5.29 × 10-10m
0.529 ×10-10m
0.0529 × 10-10m
The fundamental particle which is responsible for keeping the nucleons together is
Electron
Proton
Positron
Meson
What will be the total spin resulting from a d6 configuration?
3
3/2
1
2
In an atom with 2K, 8L and 13M electrons,what will be the total number of 'p' electrons ?
12
6
4
