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Atomic , a·tom·ic / əˈtämik/ • adj. of or relating to an atom or atoms: the atomic nucleus. ∎ Chem. (of a substance) consisting of uncombined atoms rather tha… tautomer , tau·to·mer / ˈtôtəmər/ • n. Chem. each of two or more isomers of a compound that exist together in equilibrium, and are readily interchanged by migra… Atomic Clock , Atomic clocks are the world's most accurate time keepers—more accurate than astronomical time or quartz clocks. Originally, a second was defined as 1… Atom , atom •hansom, ransom, Ransome, transom •Wrexham • sensum • Epsom • jetsam •lissom • winsome • gypsum • alyssum •blossom, opossum, possum •flotsam • a… Deuterium , Deuterium is an isotope of hydrogen with atomic mass of 2. It is represented by the symbols 2H or D. Deuterium is also known as heavy hydrogen. The n… Radioactivity , Radioactivity is the emission of radiation by unstable nuclei. That radiation may exist in the form of subatomic particles (primarily alpha and beta…
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