a) Name and explain the quantum numbers.
Answers
Answer:
A quantum number is a value that is used when describing the energy levels available to atoms and molecules. An electron in an atom or ion has four quantum numbers to describe its state and yield solutions to the Schrödinger wave equation for the hydrogen atom.
There are four quantum numbers:
- n - principal quantum number: describes the energy level
- ℓ - azimuthal or angular momentum quantum number: describes the subshell
- mℓ or m - magnetic quantum number: describes the orbital of the subshell
- ms or s - spin quantum number: describes the spin
Explanation:
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Answer:
A total of four quantum numbers are used to describe completely the movement and trajectories of each electron within an atom. The combination of all quantum numbers of all electrons in an atom is described by a wave function that complies with the Schrödinger equation. Each electron in an atom has a unique set of quantum numbers; according to the Pauli Exclusion Principle, no two electrons can share the same combination of four quantum numbers. Quantum numbers are important because they can be used to determine the electron configuration of an atom and the probable location of the atom's electrons. Quantum numbers are also used to understand other characteristics of atoms, such as ionization energy and the atomic radius.