2.8 Quantum Numbers

Front

What are quantum numbers?

Back

Quantum numbers are a set of numerical values that describe the unique quantum state of an electron in an atom, including its energy level, shape, orientation, and spin.

Front

What does the principal quantum number (n) represent?

Back

The principal quantum number (n) represents the energy level of an electron in an atom, indicating its distance from the nucleus.

Front

What does the azimuthal quantum number (l) indicate?

Back

The azimuthal quantum number (l) indicates the shape of the orbital and can take values from 0 to n-1.

Front

What are the possible values of the azimuthal quantum number (l) for a p orbital?

Back

For a p orbital, the azimuthal quantum number (l) is equal to 1.

Front

What does the magnetic quantum number (ml) specify?

Back

The magnetic quantum number (ml) specifies the orientation of the orbital in space and can take values from -l to +l.

Front

What are the possible values of ml for a d orbital?

Back

For a d orbital (l=2), the possible values of ml are -2, -1, 0, +1, +2.

Front

What does the spin quantum number (ms) represent?

Back

The spin quantum number (ms) represents the intrinsic spin of an electron, which can be either +1/2 or -1/2.

Front

How many electrons can occupy a single orbital?

Back

A single orbital can hold a maximum of 2 electrons, each with opposite spins.

Front

What is the maximum number of electrons in a principal energy level (n)?

Back

The maximum number of electrons in a principal energy level (n) is given by the formula 2n².

Front

How many orbitals are there in the p subshell?

Back

There are 3 orbitals in the p subshell.