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The shortest-lived isotope of lithium is 4 Li, which decays through proton emission and has a half-life of 7.6 × 10 −23 s. [26] The 6 Li isotope is one of only five stable nuclides to have both an odd number of protons and an odd number of neutrons, the other four stable odd-odd nuclides being hydrogen-2, boron-10, nitrogen-14, and tantalum ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
Dilithium, Li 2, is a strongly electrophilic, diatomic molecule comprising two lithium atoms covalently bonded together. Li 2 has been observed in the gas phase. It has a bond order of 1, an internuclear separation of 267.3 pm and a bond energy of 102 kJ/mol or 1.06 eV in each bond. [1] The electron configuration of Li 2 may be written as σ 2 ...
Each chemical element has a unique atomic number (Z— for "Zahl", German for "number") representing the number of protons in its nucleus. [4] Each distinct atomic number therefore corresponds to a class of atom: these classes are called the chemical elements. [5] The chemical elements are what the periodic table classifies and organizes.
Healthy Little Beggar Boys Catching Newts Or Fish. [4] Hi, Here Little Beatniks Brandish Countless Number Of Flick kNives. [5] Nagging Maggie Always Sighs, "Please Stop Clowning Around." [6] (adapted) Hi Helium." Little Berries Borrow Carbs, NO Fight Needed. Hi Hello! Lion Beneath the Burning Car Needs Oxygen For New life.
The number of atoms of an element in a molecule or chemical compound is shown in the right subscript position (e.g., N 2 or Fe 2 O 3). If this number is one, it is normally omitted - the number one is implicitly understood if unspecified. A radical is indicated by a dot on the right side (e.g., Cl • for a neutral chlorine atom).
This is a list of common chemical compounds with chemical formulae and CAS numbers, ... AlF 6 Li 3: lithium hexafluoroaluminate: 13821-20-0 AlF 6 Na 3: cryolite ...
Of the 80 elements with at least one stable isotope, 26 have only one stable isotope. The mean number of stable isotopes for the 80 stable elements is 3.1 stable isotopes per element. The largest number of stable isotopes for a single element is 10 (for tin, element 50).