sodium

sodium

A soft, light, malleable, ductile, silvery-white, metallic chemical element that has a waxy feel. Sodium’s symbol is Na, its atomic number is 11, and its atomic weight is 22.9898. Sodium is in the alkaline metal group and is extremely active, combining readily with other chemical elements.

Pure sodium metal combines instantly with oxygen when it is exposed to air, and it causes water to decompose with a violent reaction. Because of this, sodium metal must be kept covered with kerosine.

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