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) indicates the main energy level or shell of an electron in an atom, with possible values of n being positive integers (1, 2, 3, ...).

Front

What does the azimuthal quantum number (l) indicate?

Back

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

Front

What are the possible values of l for n=3?

Back

For n=3, the possible values of l are 0 (s), 1 (p), and 2 (d).

Front

What does the magnetic quantum number (m_l) represent?

Back

The magnetic quantum number (m_l) represents the orientation of the orbital in space and can take on integer values from -l to +l.

Front

What is the maximum number of electrons in a given energy level?

Back

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

Front

How many orbitals are in the p sublevel?

Back

There are 3 orbitals in the p sublevel.

Front

What is the shape of an s orbital?

Back

The shape of an s orbital is spherical.

Front

What is the shape of a p orbital?

Back

The shape of a p orbital is dumbbell-shaped.

Front

What is the shape of a d orbital?

Back

The shape of a d orbital is more complex, often described as cloverleaf-shaped.