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  2. Isotopes of moscovium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_moscovium

    Moscovium (115 Mc) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no known stable isotopes. The first isotope to be synthesized was 288 Mc in 2004. There are five known radioisotopes from 286 Mc to 290 Mc. The longest-lived isotope is 290 Mc with a half-life of 0.65 seconds.

  3. Form (document) - Wikipedia

    en.wikipedia.org/wiki/Form_(document)

    A form is a document which contains blank spaces (also named fields or placeholders) in which one can write or select an option. Forms can be distributed to several signatories at once, or made available on demand. Before being filled out, each copy of a form is usually identical, except, possibly, for a serial number. A form allows an ...

  4. Nickel(II) acetate - Wikipedia

    en.wikipedia.org/wiki/Nickel(II)_acetate

    The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid: . NiCO 3 + 2 CH 3 CO 2 H + 3 H 2 O → Ni(CH 3 CO 2) 2 ·4 H 2 O + CO 2. The mint-green tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central nickel centre being coordinated by four water molecules and two acetate ligands. [5]

  5. Modified condition/decision coverage - Wikipedia

    en.wikipedia.org/wiki/Modified_condition/...

    In 2002 Sergiy Vilkomir proposed reinforced condition/decision coverage (RC/DC) as a stronger version of the MC/DC coverage criterion that is suitable for safety-critical systems. [7] [8] Jonathan Bowen and his co-author analyzed several variants of MC/DC and RC/DC and concluded that at least some MC/DC variants have superior coverage over RC ...

  6. MC4 connector - Wikipedia

    en.wikipedia.org/wiki/MC4_connector

    The MC in MC4 stands for the manufacturer Multi-Contact (now Stäubli Electrical Connectors) and the 4 for the 4 mm diameter contact pin. MC4s allow strings of panels to be easily constructed by pushing the compatible connectors from adjacent panels together by hand, but require a tool to disconnect them to ensure they do not accidentally ...

  7. Nihonium - Wikipedia

    en.wikipedia.org/wiki/Nihonium

    The missing 280 Nh and 281 Nh may be populated as daughters of 284 Mc and 285 Mc, producible in the 241 Am+ 48 Ca reaction, but this has not yet been attempted. [105] Of particular interest is 281 Nh, as it is the expected great-granddaughter of 293 119 , a possible product of the 243 Am+ 54 Cr reaction. [ 106 ]

  8. Magnesium oxide - Wikipedia

    en.wikipedia.org/wiki/Magnesium_oxide

    Magnesium hydroxide forms in the presence of water (MgO + H 2 O → Mg(OH) 2), but it can be reversed by heating it to remove moisture. Magnesium oxide was historically known as magnesia alba (literally, the white mineral from Magnesia ), to differentiate it from magnesia nigra , a black mineral containing what is now known as manganese .

  9. Reference materials for stable isotope analysis - Wikipedia

    en.wikipedia.org/wiki/Reference_materials_for...

    The δ values and absolute isotope ratios of common reference materials are summarized in Table 1 and described in more detail below. Alternative values for the absolute isotopic ratios of reference materials, differing only modestly from those in Table 1, are presented in Table 2.5 of Sharp (2007) [1] (a text freely available online), as well as Table 1 of the 1993 IAEA report on isotopic ...

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