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Argon (18 Ar) has 26 known isotopes, from 29 Ar to 54 Ar, of which three are stable (36 Ar, 38 Ar, and 40 Ar). On the Earth, 40 Ar makes up 99.6% of natural argon. The longest-lived radioactive isotopes are 39 Ar with a half-life of 268 years, 42 Ar with a half-life of 32.9 years, and 37 Ar with a half-life of 35.04 days.
Argon is a chemical element; it has symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. [10] Argon is the third most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv).
Ohio County is a county located in the Northern Panhandle of the U.S. state of West Virginia, and forms part of the Wheeling metropolitan area. As of the 2020 census , the population was 42,425. [ 1 ]
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I encourage each of you, just as I do, to reach out to your legislators and encourage them to put forward needed changes to Ohio property tax law. Alan Harold was elected Stark County Auditor in 2010.
The Mountaineer Power Plant is a major coal-fired power plant outside New Haven, West Virginia, USA. Owned by American Electric Power (AEP), it has one of the tallest chimneys in the world at 336 metres (1,102 ft). This chimney was built as part of the plant in 1980 and is not in use now.
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