Pericyclic Analogies
Transition State Structures
Proton Affinities
Electrocyclic and Sigmatropic Rearrangements

http://blueline.ucdavis.edu/2ndTier/3rdTier/PeriAnalogies.html

https://en.wikipedia.org/wiki/Sigmatropic_reaction

https://en.wikipedia.org/wiki/Pericyclic_reaction

https://en.wikipedia.org/wiki/2,3-sigmatropic_rearrangement

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Molecular Hydrogen
Hydrogen Atom Shift
Hydride Shifts
Proton Affinities
Transition Metals
Transition State
Structures Rearrangements
Electrocyclic
Sigmatropic
Pericyclic
Reaction Ring
Double Bonds
Heterocyclic
Heterolytic
Homolytic
Cleavage
Hydrogen Atom Transfer
(HAT) Pathways
Methyl Donors (𝐶𝐻3)
Methylation
Cycloaddition
Photoredox Catalysis

Vitamin D3
Cholecalciferol
Dehydrocholesterol
Carbon 19 9
UVB
Heat Light

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Molecular Hydrogen
H2 Gas
Magnesium
Hydrochloric Acid
HCL Betaine

Molecular hydrogen: a preventive and therapeutic medical gas for various diseases

https://pmc.ncbi.nlm.nih.gov/articles/PMC5731988/

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Single-Displacement Reaction

List of common metals that displace hydrogen from acids (arranged in order of reactivity)

Reactive Metals:

Lithium (Li) - Highly reactive
Potassium (K)
Barium (Ba)
Calcium (Ca)
Sodium (Na)
Magnesium (Mg)
Aluminum (Al)
Manganese (Mn)
Zinc (Zn) - Commonly used in lab
Chromium (Cr)
Iron (Fe)
Cadmium (Cd)
Cobalt (Co)
Nickel (Ni)
Tin (Sn)
Lead (Pb) - Slow reaction

Metals such as Copper, Mercury, Silver, Platinum, and Gold are below hydrogen in the activity series and cannot displace hydrogen from dilute acids.