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Atom , atom •hansom, ransom, Ransome, transom •Wrexham • sensum • Epsom • jetsam •lissom • winsome • gypsum • alyssum •blossom, opossum, possum •flotsam • a… Tritium , Tritium
Tritium is an isotope of the chemical element hydrogen (H). It has not only a single proton but also two neutrons in the nucleus of its atoms… 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… Atomic Theory , One of the points of dispute among early Greek philosophers was the ultimate nature of matter. The question was whether the characteristics of matter… Atoms , Atom
Ordinary physical and chemical matter is made of atoms. An atom is defined by its atomic number Z : A neutral atom has Z electrons, whose negati… 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…
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