What parameters are required to determine the position of an electron? Explain.

Choose the correct statement.

The Bohr model of the atom is contradicted by

The uncertainty in the position and velocity of a particle are $10^{-10} \ m$ and $5.27 \times 10^{-24} \ ms^{-1}$ respectively. The mass of the particle is ............. $kg$. $(h = 6.625 \times 10^{-34} \ JS)$

What is the value of $\Delta v \cdot \Delta x$ for an electron? What does it indicate?

"The position and velocity of a small particle like an electron cannot be simultaneously determined." This statement is: