How many quantum numbers?

Answer 1

n = 2, l = 0, ml = 0, ms = -1/2 Only the radial function R(r) of the Schrodinger wave function (psi) is needed to calculate the Energy. The radial function only deals with the principle quantum number (n). Therefore, only n is required to find the Energy. As to find the Energy states, one must specify if we are dealing with a one-electron atom situation or multiple-electron system. For one-electron atoms, the Energy states is determined by the principle quantum number (n). For multi-electron systems, the Energy states depend on both the principle quantum number (n) and orbital quantum number (l). This explanation is valid unless we are using very high resolution spectroscopic techniques, deviations will appear.

Answer 2

4 quantum numbers.

The first is the principal quantum number, usually denoted n, which tells you the main energy level of the electron. This number is always a positive integer (i.e. 1,2,3...).

The second is the angular momentum or someimtes called azimuthal quantum number, l (lowercase L), which describes the shape/type of the orbital. This number can be between 0 to n-1. 0 denotes s-orbital (sphere-like). 1 denotes p-orbital, 2 d, 3 f, 4 g, 5h, 6i... However, at ground state (lowest energy state) of elements on the Periodic Table have electrons only up to f-orbital, nothing higher.

The third is magnetic quantum number, m, which denotes orientations of the orbitals. This number can range from l to -l. For instance, for the s-orbital (l=0), you can only have 1 orientation (try rotating it and you get the same orbital. For p-orbital, you can rotate it in three ways, denoted by m = -1, 0, 1.

The fourth is spin, which is either up or down, +1/2 or -1/2 respectively. Don't worry too much about this number.

Answer 3

The four quantum numbers used to describe an electron in the quantum mechanical model of an atom include the Principal quantum number, azimuthal quantum number, Magnetic quantum number, and the Spin quantum number.

Answer 4

There are 4 quantum numbers needed to specify a particular electron in an atom. The first, called the principle quantum number and labeled as n, describes the electron's energy level. The second, often referred to as the angular quantum number and labeled as l, describes the orbital angular momentum of the electron in question. The third, known as the magnetic quantum number and labeled as ml, describes the projection of the electron's orbital angular momentum along a specific axis. Finally, the fourth, called the spin projection quantum number and labeled as ms, describes the intrinsic spin of the electron.

Answer 5

They act as codes that provide information about each electron in an atom.

n - energy level (can be 1,2,3…)

l - orbital shape (s=0, p=1, d=2)

ml - orbital orientation (goes from -/to +/by integers)

ms - spin (arrow up or down, and can be either +½ or -½)

Answer 6

Four in number

They are

Principal

Azimuthal

Magnetic and

Spin

Answer 7

Principal,subsidiary,magnetic,and spin quatum numbers

Answer 8

2

Answer 9

2

Answer 10

5.