The terms used (high-spin and low-spin)
doesn’t refer to a number of unpaired electrons but to different electron configuration
in d-orbitals that you can get from the pairing energy. As for Fe3+’s unpaired
electron here are the answers:
Octahedral high-spin: 5 unpaired
electrons
Octahedral low-spin: 1 unpaired
electron
Answer:
Obtained from the elements hydrogen and carbon, olefins, also known as alkenes, are organic compounds that contain one or more pairs of carbon atoms that are connected together by a single double bond. Unsaturated hydrocarbons such as olefins are examples of such compounds (compounds that contain only hydrogen and carbon and at least one double or triple bond).
Explanation:
Olefin is a chemical term that refers to oil formation, and it was originally used to ethylene since oil was generated when ethylene was treated with chlorine. It is currently applicable to any hydrocarbons containing linear C::C double bonds, regardless of their structure (not aromatic C::C double bonds).
The reason why Tin granules is mostly used or preferred than
just a piece of Tin because a piece of Tin is plainly metal, in which this will
be difficult in having it to be oxidized when it is exposed or in the air
rather than Tin granules.
The Ca2+ release-activated Ca2+ (CRAC) channel is the most well-documented of the store-operated ion channels that are widely expressed and are involved in many important biological processes. However, the regulation of the CRAC channel by intracellular or extracellular messengers as well as its molecular identity is largely unknown. Specifically, in the absence of extracellular divalent cations, it becomes permeable to monovalent cations with a larger conductance, however, this monovalent cation current inactivates rapidly by an unknown mechanism. Here we found that Ca2+ dissociation from a site on the extracellular side of the CRAC channel is responsible for the inactivation of its Na+ current, and Ca2+ occupancy of this site otherwise potentiates its Ca2+ as well as Na+ currents. This Ca2+-dependent potentiation is required for the normal functioning of CRAC channels.
Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms.
Learn more about current here:
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Calcium Chloride's chemical formula is CaCl2.