PT #067-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, angular momentum, and orientation.

Front

What does the principal quantum number (n) represent?

Back

The principal quantum number (n) represents the main energy level or shell 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 is associated with the angular momentum of the electron.

Front

What are the possible values of ℓ for a given n?

Back

The possible values of ℓ range from 0 to (n-1). For example, if n=3, ℓ can be 0, 1, or 2.

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 is the spin quantum number (ms)?

Back

The spin quantum number (ms) describes the intrinsic spin of the 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, which must have opposite spins.

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

How many orbitals are in the p subshell?

Back

There are 3 orbitals in the p subshell.