You probably learned in high school chemistry class that core electrons don't participate in chemical bonding.
2don MSN
Scientists reveal the molecular choreography behind lanthanide separation in rare earth chemistry
What do magnets, smartphones and medical imaging devices have in common? They all depend on rare earth elements called ...
Photoshop Harmonize automatically adjusts an object's color, lighting, and shadows to match any background. It's very, very good - and addictive.
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