You probably learned in high school chemistry class that core electrons don't participate in chemical bonding.
The Brighterside of News on MSN
Astronomers find enormous gas structure connecting two dwarf galaxies
A 50-million-light-year-long flow of hydrogen gas has been observed linking two tiny galaxies 50 million light-years away, ...
Researchers with the Department of Energy's Oak Ridge National Laboratory and the University of Tennessee, Knoxville, have created an innovative method to visualize and analyze atomic structures ...
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