The simultaneous determination of the exact position and momentum of an electron is:

The position of both an electron and a helium atom is known within $1.0 \, nm$ and the momentum of the electron is known within $50 \times 10^{-26} \, kg \, m \, s^{-1}$. The minimum uncertainty in the measurement of the momentum of the helium atom is

What is quantum mechanics? Give its primary information.

The uncertainty in momentum of an electron is $1 \times 10^{-5} \ kg \ m/s$. The uncertainty in its position will be $(h = 6.62 \times 10^{-34} \ kg \ m^2/s)$

Which of the following quantum numbers is not obtained by the solution of the Schrodinger wave equation?

What is the quantum mechanical model of the atom? Give its important features.