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  2. Actinide contraction - Wikipedia

    en.wikipedia.org/wiki/Actinide_contraction

    About 40-50% of the actinide contraction has been attributed to relativistic effects. [2] A decrease in atomic radii can be observed across the 5f elements from atomic number 89, actinium, to 102, nobelium. This results in smaller than otherwise expected atomic radii and ionic radii for the subsequent d-block elements starting with 103, lawrencium.

  3. Lanthanide - Wikipedia

    en.wikipedia.org/wiki/Lanthanide

    The lanthanides obey the Oddo–Harkins rule – odd-numbered elements are less abundant than their even-numbered neighbors. Three of the lanthanide elements have radioactive isotopes with long half-lives (138 La, 147 Sm and 176 Lu) that can be used to date minerals and rocks from Earth, the Moon and meteorites. [88]

  4. Lanthanide compounds - Wikipedia

    en.wikipedia.org/wiki/Lanthanide_compounds

    Lanthanide metals react exothermically with hydrogen to form LnH 2, dihydrides. [1] With the exception of Eu and Yb, which resemble the Ba and Ca hydrides (non-conducting, transparent salt-like compounds),they form black pyrophoric, conducting compounds [6] where the metal sub-lattice is face centred cubic and the H atoms occupy tetrahedral sites. [1]

  5. Everything you need to know about the Mayo Clinic diet - AOL

    www.aol.com/lifestyle/everything-know-mayo...

    The Mayo Clinic diet, a program that adheres to this notion, was developed by medical professionals based on scientific research, so you can trust that this program is based on science, and not ...

  6. Actinide concept - Wikipedia

    en.wikipedia.org/wiki/Actinide_concept

    The actinide concept explained some of the observed properties of the first few actinides, namely the presence of +4 to +6 oxidation states, and proposed hybridization of the 5f and 6d orbitals, whose electrons were shown to be loosely bound in these elements. It also supported experimental results for a trend towards +3 oxidation states in the ...

  7. Rare-earth element - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_element

    The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.

  8. A Pill For Longer, Thicker Hair? These Are Worth Your Money ...

    www.aol.com/20-best-supplements-hair-growth...

    Hair Growth Supplements. Viviscal's blend of ingredients (vitamin C, flax seed extract, and zinc, to name a few) help hair remain in its growth phase, called anagen.

  9. 15 Best New Breakfast Recipes You'll Want to Make This Fall - AOL

    www.aol.com/15-best-breakfast-recipes-youll...

    Before reaching for a muffin at the coffee shop or bakery, consider making your own nutritious muffins at home for a week’s worth of breakfasts on the go.