Block, SkipCaptcha, nsAm_Govt_101RO, nsAm_Govt_101RW, nsAm_Govt_101_ta, nsTeam2RO, nsTeam2RW, nsTeam2_talkRO, nsTeam2_talkRW
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== Element ==
'''Name:''' Argon
'''Symbol:''' Ar
'''Atomic Number:''' 18
'''Atomic Mass:''' 39.9 amu
'''Number of electrons:''' 18
'''Classification:''' Non-metal
'''Crystal structure:''' Cubic
'''Color:''' Colorless gas
'''Date of Discovery:''' 1894
'''Name of Discoverer:''' [[Sir William Ramsey]]
'''Name Origin:''' From the Greek ''argon''.
'''Uses:''' Lighting
'''Obtained from:''' Air
'''Name:''' Argon
'''Symbol:''' Ar
'''Atomic Number:''' 18
'''Atomic Mass:''' 39.9 amu
'''Number of electrons:''' 18
'''Classification:''' Non-metal
'''Crystal structure:''' Cubic
'''Color:''' Colorless gas
'''Date of Discovery:''' 1894
'''Name of Discoverer:''' [[Sir William Ramsey]]
'''Name Origin:''' From the Greek ''argon''.
'''Uses:''' Lighting
'''Obtained from:''' Air