Energy level - Wikipedia
网页A quantum mechanical system or particle that is bound —that is, confined spatially—can only take on certain discrete values of energy, called energy levels. This contrasts with classical particles, which can have any amount of energy. The term is commonly used for the energy levels of the electrons in atoms, ions, or molecules, which are ...
Energy level | Definition, Diagram, & Facts | Britannica
网页Energy level, in physics, any discrete value from a set of values of total energy for a subatomic particle confined by a force to a limited space or for a system of such particles, such as an atom or a nucleus. A particular hydrogen atom, for example, may exist in any of several configurations,
能级 - 百度百科
网页能层 （英语： Energy level ）理论是一种解释 原子核 外电子运动轨道的一种理论。 它认为电子只能在特定的、分立的轨道上运动，各个轨道上的电子具有分立的能量，这些能量值即为 能级 。
5.12: Energy Level - Chemistry LibreTexts
网页2022年9月20日 · Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase.
Lesson Explainer: Electrons and Energy Levels | Nagwa
网页In this explainer, we will learn how to describe and identify energy levels in atoms and determine the number of electrons each energy level can contain.
Energy Level - Principal Quantum Number | Bohr's Atomic Model …
网页Different orbits in which electrons revolve are called energy levels or stationary states. These stationary energy/state levels for an electron are denoted as n= 1, 2, 3….. These numbers are also called the principal quantum numbers.
能级 - 维基百科，自由的百科全书
网页能级 （英語： energy level）又称 能阶，是描述微观粒子体系（原子、电子、分子等）可能存在的相对稳定状态下，所对应一系列不连续的、分立的且确定的“内在”能量值或状态。. 能级理论 则是一种解释 原子核 外 电子 运动轨道的理论。. 它认为电子只能在 ...
Atom - Electrons, Orbitals, Energy | Britannica
网页2024年8月17日 · Each element has a unique set of energy levels, and so the frequencies at which it absorbs and emits light act as a kind of fingerprint, identifying the particular element. This property of atoms has given rise to spectroscopy , a science devoted to identifying atoms and molecules by the kind of radiation they emit or absorb.
Energy Level: Definition, Equation (w/ Diagrams) - Sciencing
网页2020年12月28日 · Energy levels are energy values that an electron in an atom can have or occupy. The lowest energy state or energy level is called the ground state. Since the electrons are attracted to the positively charged protons in the nucleus, they will generally fill the lower energy levels first.
Energy Level: Concept of Energy Level, Formula, Bohr model
网页Energy level refers to a fixed distance from an atom’s nucleus where electrons may exist. An energy level is a certain discrete value of energy. The common use of the term ‘energy level’ is for the energy levels of the electrons in atoms, molecules, or ions whose bounding takes place by the nucleus’s electric field.