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Noble Gases , The noble gases are the six elements that make up Group 18 of the periodic table: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and r… Helium , Helium
Background
Helium is one of the basic chemical elements. In its natural state, helium is a colorless gas known for its low density and low che… Gas , Gas
Since ancient times, use of poison has been considered treacherous and, therefore, incompatible with honorable conduct in war. Yet, the history o… Mustard Gas , Among the toxic agents that can injure or kill people are noxious gases. One example is mustard gas. Its use as an offensive chemical weapon makes mu… Tear Gas , tear gas / ti(ə)r/ • n. gas that causes severe irritation to the eyes, chiefly used in riot control to force crowds to disperse. • v. (tear-gas) [tr.… Tokyo Gas Co. Ltd , Tokyo Gas Co., Ltd.
1-5-20 Kaigan
Minato-ku
Tokyo 105
Japan
(03) 3433 2111
Fax: (03) 3432 4574
Public Company
Incorporated: 1885
Employees: 12,519
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