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A metastable state of weaker bond (1), a transitional "saddle" configuration (2) and a stable state of stronger bond (3). In chemistry and physics, metastability is an intermediate energetic state within a dynamical system other than the system's state of least energy.
A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state levels (higher energy levels). ). "Metastable" describes nuclei whose excited states have half-lives 100 to 1000 times longer than the half-lives of the excited nuclear states that decay with a "prompt" half life (ordinarily on the order of 10
In this condition it is called metastable. It may last for a very long time in this state, but could eventually decay to the more stable one, an event known as false vacuum decay . The most common suggestion of how such a decay might happen in our universe is called bubble nucleation – if a small region of the universe by chance reached a ...
Metastable and kinetically persistent species or systems are not considered truly stable in chemistry. Therefore, the term chemically stable should not be used by chemists as a synonym of unreactive because it confuses thermodynamic and kinetic concepts. On the other hand, highly chemically unstable species tend to undergo exothermic unimolar ...
This is a so-called metastable state or metastate, where boiling might occur at any time, induced by external or internal effects. [1] [2] Superheating is achieved by heating a homogeneous substance in a clean container, free of nucleation sites, while taking care not to disturb the liquid. This may occur by microwaving water in a very smooth ...
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In the worst case, depending on timing, the metastable condition at D s can propagate to D out and through the following logic into more of the system, causing undefined and inconsistent behavior. In electronics, metastability is the ability of a digital electronic system to persist for an unbounded time in an unstable equilibrium or metastable ...