## Why can’t electrons orbit the nucleus in circular paths?

The electrons are NOT moving around the nucleus along the circles. Instead, the circles represent energy levels. The electrons on the circle closest to the nucleus have the lowest energy. The eight electrons on the next circle have a higher energy, and the one on the outer circle has the highest energy.

## How did Bohr explain that the electrons would not be pulled into the nucleus?

The Bohr model was proposed to solve this, by stipulating that the orbits were closed and quantized and no energy could be lost while the electron was in orbit, thus creating the stability of the atom necessary to form solids and liquids.

## Why electrons Cannot exist inside the nucleus?

The de-Broglie wavelength of electron decay is several times greater than the size of nucleus. As a result an electron cannot be confined inside the nucleus.

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## Why do electrons and protons not attract?

Protons and electrons stick to each other as much as they can, but kinetic energy and quantum mechanics keep them from holding still. Protons and electrons are attracted to each other because the positive electric charge of the proton is attracted to the negative charge of the electron.

## Why do electrons move in a circular orbit?

Circular orbits in magnetic fields

When a charged particle moves at right angles to a magnetic field, the magnetic force on the particle is perpendicular to both its direction of motion and the magnetic field. This can result in circular motion.

## Do electrons move in circular orbit?

The electron travels in circular orbits around the nucleus. The orbits have quantized sizes and energies. The laws of quantum mechanics describe the process by which electrons can move from one allowed orbit, or energy level, to another.

## Where do electrons have the most energy?

The energy of an electron depends on its location with respect to the nucleus of an atom. The higher the energy of an electron in an atom, the farther is its most probable location from the nucleus.

## What hold the nucleus together?

The strong nuclear force. At extremely short range, it is stronger than electrostatic repulsion, and allows protons to stick together in a nucleus even though their charges repel each other.

## What did Bohr’s model have that Rutherford’s didn t?

Rutherford described the atom as consisting of a tiny positive mass surrounded by a cloud of negative electrons. Bohr thought that electrons orbited the nucleus in quantised orbits. Bohr built upon Rutherford’s model of the atom. So it was not possible for electrons to occupy just any energy level.

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## Do electrons exist in the nucleus?

Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus.

## Does electron move around nucleus?

With all of this in mind, an electron in a stable atomic state does not move in the sense of a solid little ball zipping around in circles like how the planets orbit the sun, since the electron is spread out in a wave. Furthermore, an electron in a stable atomic state does not move in the sense of waving through space.

## Is free neutron a stable particle?

A free neutron is unstable, decaying to a proton, electron and antineutrino with a mean lifetime of just under 15 minutes (879.6±0.8 s). This radioactive decay, known as beta decay, is possible because the mass of the neutron is slightly greater than the proton. The free proton is stable.

## Why do electrons not lose energy?

1) If an electron is in the electric field of a nucleus, the electron can occupy only certain energy levels. When it is sitting on one of these energy levels, it does not radiate, it does not loose energy.