Are there any exceptions to the Pauli exclusion principle?

Particles with an integer spin, or bosons, are not subject to the Pauli exclusion principle: any number of identical bosons can occupy the same quantum state, as with, for instance, photons produced by a laser or atoms in a Bose–Einstein condensate.

Why 1S3 is not possible?

The 1S3 configuration is forbidden by a fundamental feature of nature summarized by the Austrian physicist Wolfgang Pauli in the Pauli exclusion principle. After filling 2 electrons in 1S orbital, remaining electrons are assigned to the next coming orbitals…

Which electron configuration violates the Pauli Exclusion Principle?

The 1s and 2s subshells for beryllium atoms can hold only two electrons, and when filled, the electrons must have opposite spins or have the same four quantum numbers. Thus violating the Pauli Exclusion Principle.

Which electronic configuration does not follow the false exclusion principle?

1s2,2p4.

How many electrons can NL 4 have in an atom?

In an atom, both 4s (n = 4, l = 0) and (n = 3, l = 1) orbitals can have n + l =4. Since four orbitals are involved, they can have maximum of eight electrons.

What type of configuration violates Hund’s rule?

Here, in p orbital one subshell is vacant but one subshell is doubly filled or full filled. This type of electronic configuration violated the Hund’s rule.

Why Pauli Exclusion Principle is called exclusion principle?

It is called the exclusion principle because, according to this principle, if one electron in an atom has the same particular values for the four quantum numbers, then all the other electrons in that atom are excluded from having the same set of values.

Are black holes really singularities?

In the real universe, no black holes contain singularities. In general, singularities are the non-physical mathematical result of a flawed physical theory. A singularity is a point in space where there is a mass with infinite density. This would lead to a spacetime with an infinite curvature.