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 maximum number of electrons in an atom that can have the quantum numbers n = 3, ml = +1 ?
8
4
16
6
The wave length of the first line of Balmer series of hydrogen atom is 6561Ao. The wave length of the third line of the series is
2180 Ao
4339 Ao
13122 Ao
5865 Ao
The fundamental particle which is responsible for keeping the nucleons together is
Electron
Proton
Positron
Meson
How many number of spherical nodes will be in 4p orbitals ?
1
3
2
Which one has the same unit that of Planck's constant ?
Energy
Work
Angular momentum
Linear momentum
Where does the cathode rays get deflected?
A magnetic field only
An electric field only
Both electric and magnetic field
None of these
The ground state of an atom means that all the electrons are?
Having the same energy
In the lowest possible energy state
In the first orbit
In the nucleus
How many electrons will be present in the highest principal energy level of cobalt (z = 27) ?
7
9
What will be the total spin resulting from a d6 configuration?
3/2
