Question

Why electrons don't fall to the nucleus?​​​​

Answer 1

Answer:

Electrons are kept in the orbit around the nucleus by the electromagnetic force.

Explanation:

• Electron revolves around the nucleus with a negative charge and the nucleus possesses a positive charge. The electrostatic force of attraction must pull the electrons into the nucleus but it's not that simple.

• There is a quantum mechanical feature that prevents the electrons to fall into the nucleus. This is described by the uncertainty equation between the position and momentum of the electron.

• The equation is represented as:

                                              ${\displaystyle \sigma _{x}\sigma _{p}\geq {\frac {\hbar }{2}}$

where,

              ħ= reduced Planck constant

• This equation gives the limitation that an electron cannot fall into the nucleus.