Who developed quantum mechanics?

Provide the equation for a system where the energy of an atom or molecule does not change with time.

In an atom,an electron is moving with a speed of $600 \ m/sec$ with an uncertainty of $0.005\%$. The uncertainty with which the position of the electron can be located is:

Which one of the following conditions is incorrect for a well-behaved wave function $(\psi)$?

In Heisenberg's uncertainty equation $\Delta x \times \Delta p \ge \frac{h}{4\pi}$,$\Delta p$ stands for:

The equation $\Delta x \cdot \Delta p \ge \frac{h}{4\pi}$ shows