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The halogens have been described as “the most perfect series we have” . The chemical properties of the halogens are indeed very similar even though important differences are apparent. The group name “halogen”, which was coined in the early 19th century, is derived from αλζ, the Greek word for sea-salt, and γεν, the Greek for produce. The group name thus emphasizes the facility with which these atoms form ionic compounds with a formal negative unit charge on the halogen (X−). *) Equally well known are covalent halogen compounds with bonds of the type R-X. In fact with the exception of helium, neon and argon all elements in the Periodic Table can form halogen compounds of some kind.
KeywordsField Gradient Nuclear Spin Quadrupole Moment Electric Field Gradient Larmor Frequency
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References to Table 1.1
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