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30-Second Elements
183 печатни страници
- Притежател на авторското право
- Bookwire
- Оригинална публикация
- 2013
- Година на публикуване
- 2013
- Издател
- Icon Books
Цитати
- ☁️ ursula ☁️цитирапреди 5 години
Today, three quarters of a million tons of argon are extracted annually from liquefied air, because its very inertness makes it useful. You can fill light bulbs, fluorescent tubes and double-glazed windows with it, or use it as a propellant for aerosols, industrial sprays and even futuristic ion-propulsion spacecraft engines, without worrying that it will react or be toxic. - ☁️ ursula ☁️цитирапреди 5 годиниLike the other elements that share its column in the periodic table, it is an inert gas: unreactive, if not downright lazy (the quality for which it’s named). Argon does not lose or share any electrons by undergoing chemical reactions; it has a so-called filled shell of electrons.
- ☁️ ursula ☁️цитирапреди 5 годиниRamsay confirmed that these gases were, indeed, unique elements by examining the characteristic spectrum of light they produce when excited by an electric discharge. His co-worker, fellow British chemist Morris Travers, was thrilled to note a ‘blaze of crimson light’ in the case of neon.
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