An orbital contains no more than 2 electron. why?

Question

An orbital contains no more than 2 electron. why?

Answer 1

No it is a wrong concept. Only first shell has 2 electron. Other shells may have more than 2 electrons. For ex. second shell can accomodate 8 electrons.

Answer 2

This is in accordance with Pauli exclusion principle.

Answer 3

listen buddy, an electron is a negative charged particle.

when electrons are revolving around NUCLEUS, they repel each other. and when we come to orbitals, two electrons on two sides of the nucleus, repelling and revolving around each other.

So, when there are more electrons, they tend to go away from the nucleus, but the next orbitals accommodate them.

That's the matter

Answer 4

This is the *real* answer.

You need to understand what an orbital really is. It is not just a location within the atom, or one of those colourful illustrations you see in textbooks.

In quantum physics one speaks of a "quantum state". The quantum state of a particle describes it exactly.

Hence, if you are told that a particle is in -> this atom, -> this shell, -> this subshell, and -> this orbital, you are describing its quantum state. Right? Well, not quite.

An electron has angular momentum, meaning that it behaves as if it is spinning (even though it doesn't spin in the conventional sense, since it is a point.) It can "spin" in either of two directions, usually denoted by up arrows and down arrows. So, to describe an electron's quantum state, you specify the atom, the shell, the subshell, the orbital, and the spin.

Now, a law of quantum physics named after Wolfgang Pauli, known as the Pauli exclusion principle, states that no two fermions may occupy the same quantum state. Most particles, including electrons, are fermions. Therefore, no two electrons in the same atom may occupy the same orbital AND have the same spin. Two electrons may occupy the same orbital and have different spins, but a third electron cannot be introduced.

Answer 5

Not sure but I think: orbitals are assumed to exist by scientists. So they might have made the rules like that. But I think there's a scientific explanation for this like Heisenberg laws and etc.