Li-7

Lithium (Li) is one of the most common elements on the earth. Having 3 protons/ electrons and 4 neutrons, it's also one of the smallest. On the periodic table, Lithium is in the first row on the left, and the second period. The atomic number for lithium is 3, and the atomic mass is 7. It's considered an Alkali metal, metals that don't occur freely in nature. All Alkali metals, lithium included, if exposed to water will explode. Lithium is often kept in alcohol in order to prevent corroding. The density of Lithium is .53 g/cm 3, which means it floats in water. It was discovered by Johann Afvredson and is now used for batteries, ceramics and lubricants.



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