Quantum numbers?

Question

Please tell the quantum numbers and explain their physical meaning!

Answer 1

There are four quantum numbers:
Principal quantum number
Angular quantum number
Magnetic quantum number and
Spin quantum number

The most widely studied set of quantum numbers is that for a single electron in an atom: not only because it is useful in chemistry, being the basic notion behind the periodic table, valence (chemistry) and a host of other properties, but also because it is a solvable and realistic problem, and, as such, finds widespread use in textbooks.


The principal quantum number (n = 1, 2, 3,...) This number has a dependence only the distance between the electron and the nucleus (ie, the radial coordinate, r). The average distance increases with n, and hence quantum states with different principal quantum numbers are said to belong to different shells.

The angular quantum number (l = 0, 1 ... n−1) This quantum number is very important, since it specifies the shape of an atomic orbital and strongly influences chemical bonds and bond angles. In some contexts, l=0 is called an s orbital, l=1, a p orbital, l=2, a d orbital and l=3, an f orbital.

The magnetic quantum number (ml = −l, −l+1 ... 0 ... l−1, l) is the eigenvalue, Jz=mlh/2π.

The spin quantum number (ms = −1/2 or +1/2) was found experimentally from spectroscopy.

Answer 2

A quantum number describes the energies of electrons in atoms. Each quantum number specifies the value of a conserved quantity in the dynamics of the quantum system.

It is any of a set of real numbers assigned to a physical system that individually characterize the properties and collectively specify the state of a particle or of the system.

Answer 3

RE: What are the four Quantum numbers? "State the four Quantum numbers and what they tell us about an electron." Is there a specific 4 Quantum numbers? This is a stand alone question not connect with a model or anything. From what I understand, there isn't a set 4 quantum numbers. Maybe the question is just worded badly.

Answer 4

A quantum number describes the energies of electrons in atoms. Each quantum number specifies the value of a conserved quantity in the dynamics of the quantum system. Since any quantum system can have one or more quantum numbers, it is a futile job to list all possible quantum numbers.

Answer 5

Any set of real numbers assigned to a physical system that individualy characterize the properties and collectively specify the state of a particle or of the system.

Answer 6

you must work hard to know the answer...................

Answer 7

WTF, some of you people are just too smart. God knows I don't know, and I know everything!

Answer 8

dunno