# Which of the following quantum numbers are not possible?

## Which of the following quantum numbers are not possible?

This set of quantum numbers is not possible. n=2,l=1,ml=0,ms=+1/2; All the values according to rules n=3,l=1,ml=0,ms=+1/2; All the values according to rules.

## Which sets of quantum numbers are unacceptable?

The spin quantum number is +1/2, which is allowed. Because this set of quantum numbers follows all restrictions, it is possible. The quantum number n is an integer, but the quantum number must be less than n, which it is not. Thus, this is not an allowed set of quantum numbers.

## What are the 4 types of quantum numbers?

To completely describe an electron in an atom, four quantum numbers are needed: energy (n), angular momentum (), magnetic moment (m), and spin (ms). The first quantum number describes the electron shell, or energy level, of an atom.

## What are the quantum numbers for 2p?

Table of Allowed Quantum NumbersnlOrbital Name303s6

## How many 4f orbitals exist?

seven 4f orbitals

## What is MS quantum number?

Spin Quantum Number (ms): ms = +½ or -½. Specifies the orientation of the spin axis of an electron. An electron can spin in only one of two directions (sometimes called up and down). Atoms with more electrons that spin in one direction than another contain unpaired electrons.

## What are the 4 quantum mechanics?

quantization of certain physical properties. quantum entanglement. principle of uncertainty. wave–particle duality.

## How do you find Ms quantum number?

As we can see, in one orbital, the orientation of the two electrons is always the opposite of each other. One electron will be spin up, and the other electron is spin down. If the last electron that enters is spin up, then ms = +1/2. If the last electron that enters is spin down, then the ms = -1/2.

ħ/2

## Do electrons actually spin?

Short Answer : No! Electrons don’t actually spin as we understand it classically. If the electron is a point particle, i.e., has no finite size, then it cannot have angular momentum due to spinning about it’s own center of mass because the entire object is on its rotational axis.

## Can electrons be in 2 places at once?

About 80 years ago, scientists discovered that it is possible to be in two locations at the same time — at least for an atom or a subatomic particle, such as an electron. For such tiny objects, the world is governed by a madhouse set of physical laws known as quantum mechanics.

## What is Spin slang for?

Meaning. SPIN. Situation, Problem, Implication, Need-payoff (book by Neil Rackham) SPIN.

## What causes electrons to spin?

There’s not really anything to spin. Even so, electrons do behave like they’re “spinning” in experiments. Technically, they have “angular momentum,” the type of momentum possessed by rotating objects. It seems to be a fundamental property of the electron, like its charge or its mass.

## Can you change the spin of an electron?

Instead we have learned simply to accept the observed fact that the electron is deflected by magnetic fields. If one insists on the image of a spinning object, then real paradoxes arise; unlike a tossed softball, for instance, the spin of an electron never changes, and it has only two possible orientations.

## 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.

## How do you know the spin of an electron?

Identifying Spin DirectionDetermine the number of electrons the atom has.Draw the electron configuration for the atom. See Electronic Configurations for more information.Distribute the electrons, using up and down arrows to represent the electron spin direction.

## What is a spin 1/2 particle?

The spin number describes how many symmetrical facets a particle has in one full rotation; a spin of 12 means that the particle must be fully rotated twice (through 720°) before it has the same configuration as when it started.

## Do protons actually spin?

Protons have a constant spin that is an intrinsic particle property like mass or charge. Yet where this spin comes from is such a mystery it’s dubbed the “proton spin crisis.” Initially physicists thought a proton’s spin was the sum of the spins of its three constituent quarks. Quarks also have a spin of one half.