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• 137 (number) (category Pages using infobox number with prime parameter)
  discovered in 1874 The atomic number of an element not yet observed called untriseptium, the highest allowed element on the periodic table allowed for a point
  15 KB (1,951 words) - 17:25, 6 February 2024
• Chemistry:Calcium (category Subject bar templates with redlinked portals) (section Isotopes)
  3 × 1019 years). Calcium is the first (lightest) element to have six naturally occurring isotopes. By far the most common isotope of calcium in nature is 40Ca, which
  50 KB (5,834 words) - 05:40, 6 February 2024
• 23 (number) (category Pages using infobox number with prime parameter)
  works through [math]\displaystyle{ \mathbb W_{24} }[/math] to generate 8-element octads whose individual elements occur 253 times through its entire block
  26 KB (3,907 words) - 22:16, 6 February 2024
• Chemistry:Oxygen (category Wikipedia pages with incorrect protection templates) (section Isotopes and stellar origin)
  Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard
  121 KB (11,421 words) - 09:56, 8 February 2024
• Chemistry:Barium (category Subject bar templates with redlinked portals) (section Isotopes)
  of these isotopes is so weak that they pose no danger to life. Of the stable isotopes, barium-138 composes 71.7% of all barium; other isotopes have decreasing
  36 KB (3,678 words) - 09:28, 8 February 2024
• Chemistry:Magnesium (category Pages containing cite templates with deprecated parameters) (section Isotopes)
  the third most abundant element dissolved in seawater, after sodium and chlorine. This element is the eleventh most abundant element by mass in the human
  71 KB (7,629 words) - 02:35, 16 March 2024
• Chemistry:Sodium (category Subject bar templates with redlinked portals) (section Isotopes)
  cosmogenic isotopes are the byproduct of cosmic ray spallation: 22Na has a half-life of 2.6 years and 24Na, a half-life of 15 hours; all other isotopes have
  70 KB (7,508 words) - 02:49, 16 March 2024
• Chemistry:Lanthanum (category Subject bar templates with redlinked portals) (section Isotopes)
  hidden'. Although it is classified as a rare earth element, lanthanum is the 28th most abundant element in the Earth's crust, almost three times as abundant
  49 KB (5,840 words) - 23:23, 5 February 2024
• Chemistry:Indium (category Subject bar templates with redlinked portals) (section Isotopes)
  form cadmium isotopes, while the other indium isotopes from 115In and greater predominantly decay through beta-minus decay to form tin isotopes. Indium(III)
  47 KB (5,409 words) - 10:15, 15 October 2021
• Chemistry:Strontium (category Subject bar templates with redlinked portals) (section Isotopes)
  Of the unstable isotopes, the primary decay mode of the isotopes lighter than 85Sr is electron capture or positron emission to isotopes of rubidium, and
  60 KB (6,468 words) - 22:01, 5 February 2024
• Chemistry:Xenon (category Wikipedia pages with incorrect protection templates) (section Isotopes)
  seven stable isotopes and two long-lived radioactive isotopes. More than 40 unstable xenon isotopes undergo radioactive decay, and the isotope ratios of xenon
  114 KB (12,081 words) - 11:23, 8 February 2024
• Chemistry:Sulfur (category Subject bar templates with redlinked portals) (section Isotopes)
  proportions of two most abundant sulfur isotopes 32S and 34S varies in different samples. Assaying of these isotopes ratio (δ34S) in the samples allows to
  100 KB (10,912 words) - 02:34, 16 March 2024
• Chemistry:Caesium (category Pages containing cite templates with deprecated parameters) (section Isotopes)
  chemical element. The caesium ion is also larger and less "hard" than those of the lighter alkali metals. Most caesium compounds contain the element as the
  94 KB (9,710 words) - 02:52, 16 March 2024
• Chemistry:Potassium (category Wikipedia pages with incorrect protection templates) (section Isotopes)
  growth but actually contained a new element, which he proposed calling kali. In 1807, Humphry Davy produced the element via electrolysis: in 1809, Ludwig
  89 KB (10,239 words) - 02:37, 16 March 2024
• Chemistry:Hydrogen (category Subject bar templates with redlinked portals) (section Isotopes)
  Hydrogen is the most abundant element in the human body in terms of numbers of atoms of the element but the third most abundant element by mass. H 2 occurs in
  127 KB (12,265 words) - 08:43, 8 February 2024
• Chemistry:Chlorine (category Wikipedia pages with incorrect protection templates) (section Isotopes)
  decay mode of isotopes lighter than 35Cl is electron capture to isotopes of sulfur; that of isotopes heavier than 37Cl is beta decay to isotopes of argon;
  112 KB (12,139 words) - 01:47, 27 June 2023
• Chemistry:Iodine (category Subject bar templates with redlinked portals) (section Isotopes)
  greatest among ionic halides of that element, while those of covalent iodides (e.g. silver) are the lowest of that element. In particular, silver iodide is
  109 KB (11,805 words) - 04:12, 9 March 2024
• Chemistry:Boron (category Wikipedia pages with incorrect protection templates) (section Chemistry of the element)
  numbers greater than four. Main page: Physics:Isotopes of boron Boron has two naturally occurring and stable isotopes, 11B (80.1%) and 10B (19.9%). The mass difference
  123 KB (12,612 words) - 05:26, 6 February 2024
• Chemistry:Samarium (category Pages containing cite templates with deprecated parameters) (section Isotopes)
  Some observationally stable samarium isotopes are predicted to decay to isotopes of neodymium. The long-lived isotopes 146Sm, 147Sm, and 148Sm undergo alpha
  75 KB (8,272 words) - 12:59, 14 February 2024
• Chemistry:Gallium (category Subject bar templates with redlinked portals) (section Isotopes)
  melting. Main page: Physics:Isotopes of gallium Gallium has 31 known isotopes, ranging in mass number from 56 to 86. Only two isotopes are stable and occur naturally
  78 KB (8,678 words) - 02:33, 6 February 2024

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