The periodic table is a tabular arrangement of chemical elements, organized on the basis of their atomic number, electron configuration, and recurring chemical properties. It is generally accepted that the modern periodic table was first published by Dmitri Mendeleev in 1869, although several other scientists had developed similar tables prior to this.
CONTINUE READING >Foam snowflakes are a classic winter craft that is easy and fun to make. They can be used to decorate your home, classroom, or office, and they make great gifts for friends and family. Best of all, they are inexpensive to make and can be customized to your own liking.
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