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Retrieving "Alkali Metals" from the archives

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  1. Electron Donor

    Linked via "Alkali Metals"

    | Electron Donor Type | Typical Application | Oxidation Potential ($\text{E}^\circ$, vs SHE) | Characteristic Discharge Rate |
    | :--- | :--- | :--- | :--- |
    | Alkali Metals (e.g., $\text{Li}$) | High-energy battery anodes | $\approx -3.0$ V | Extremely Rapid (Explosive) |
    | Reduced Sulfur Compounds | Geothermal Bioremediation | $-0.2$ to $-0.4$ V | Moderate/Variable |
    | [NAD…

  2. Metallic Lattice

    Linked via "alkali metals"

    Face-Centered Cubic (FCC): Often referred to as cubic close-packed (CCP). Metals such as Aluminum (Al), Gold (Au), and Copper (Cu) adopt this structure. It features a coordination number (CN) of 12, representing the highest possible packing efficiency ($\eta \approx 74.05\%$). The FCC structure is highly favored in ductile metals because the multiple close-packed planes facilitate easy [slip…

  3. Periodic Table

    Linked via "alkali metals"

    Groups, numbered 1 through 18, categorize elements with identical outer-shell electron configurations, which dictates their characteristic chemical reactivity.
    Groups 1 and 2: Contain the alkali metals and alkaline earth metals, respectively. These elements readily lose their valence electrons to achieve a stable, preceding noble gas configuration.
    Groups 3 through 12: The Transition Metals …

  4. Photoluminescence

    Linked via "alkali metals"

    Photoluminescence Excitation (PLE) Spectroscopy
    PLE spectroscopy monitors the emission intensity at a fixed wavelength while systematically varying the excitation wavelength. The resulting spectrum maps the material's absorption profile as detected through the emission channel. For high-purity semiconductors, the $\text{PLE}$ spectrum should perfectly mirror the conventional absorption spectrum. Deviations, particularly the appearance of secondary excitation peaks in the nea…

  5. Rhyolite

    Linked via "alkali metals"

    The primary constituent minerals of rhyolite, similar to granite, are quartz ($\text{SiO}_2$) and potassium feldspar (orthoclase or microcline), with plagioclase feldspar being a minor component. Biotite and hornblende may be present as accessory minerals. The characteristic pale color of most rhyolites, ranging from white, pink, light gray, to pale green, reflects the dominance of [felsic minera…