Argon was discovered in 1894 by Sir William Ramsay and Baron John William Strutt Rayleigh. Argon’s ancient name which is Argos which means in Greek inactive. The Symbol for Argon is Ar. Argon is in the Family 18, period 3. Family 18 is a group of Nobel Gases. The Atomic Number of Argon is 18. The Atomic Mass is of Argon is 39.938. The Melting Point of Argon is 91.81 degrees K, -189.19 degrees C, -308.54 F. The Boiling Point of Argon is 87.3 degrees K, -185.7 degrees C, -302.3 degrees F. The Period that Argon belongs in
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