Answer:
a nonradiative transition between states with different spin.
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.
Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
Hence, the internal arrangement of atoms in a mineral determines all of the physical properties of the mineral.
Intersystem crossing is a nonradiative transition between states with different spin. For example, a singly excited electronic state may transit into a triple excited state or a triple excited state to a single state, non radioactively.
