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VANDALISM THREAT

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Monopoly

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Picture of the Day

Picture of the day Goniobranchus kuniei is a mollusc species in the family Chromodorididae, often classified as a sea slug. It is found in the western Pacific Ocean and eastern Indian Ocean including Fiji, the Marshall Islands, Australia, Papua New Guinea, Indonesia, Malaysia, the Philippines, Taiwan and the French territory of New Caledonia. It has a body length of up to 40 mm and features a pattern of blue spots with pale blue haloes on a creamy mantle. The mantle has a double border of purple and blue. This G. kuniei individual was photographed in Wakatobi National Park, Southeast Sulawesi, Indonesia.Photograph credit: q phia; retouched by Christian Ferrer

In the News

Demis Hassabis The Nobel Prize in Chemistry is awarded jointly to Demis Hassabis (pictured) and John M. Jumper for their work on protein structure prediction and David Baker for his work on computational protein design. Hurricane Milton makes landfall in the U.S. state of Florida. John Hopfield and Geoffrey Hinton receive the Nobel Prize in Physics for their research in machine learning with artificial neural networks. Victor Ambros and Gary Ruvkun receive the Nobel Prize in Physiology or Medicine for their discovery of microRNA. Ongoing: Israel–Hamas war Israel–Hezbollah conflict Russian invasion of Ukraine timeline Sudanese civil war timeline Recent deaths: Bernard Tissier de Mallerais Ethel Kennedy Arie L. Kopelman Johan Neeskens Christopher Ciccone Humberto Ortega

On this Day

October 11: Yom Kippur begins at sunset (Judaism); Feast day of Saint James the Deacon (Anglicanism); Double Ninth Festival in China (2024); National Coming Out Day Aftermath of the Myyrmanni bombing 1142 – The Treaty of Shaoxing was ratified, ending the Jin–Song wars, although sporadic fighting continued until 1234. 1968 – Apollo 7, the first manned mission of NASA's Apollo program, and the first three-man American space mission, launched from Complex 34 in Cape Kennedy, Florida. 1987 – Sri Lankan Civil War: The Indian Peace Keeping Force began Operation Pawan to take control of Jaffna from the Tamil Tigers and enforce their disarmament as a part of the Indo-Sri Lanka Accord. 2002 – A bomb exploded in the Myyrmanni shopping center in Helsinki, Finland, (aftermath pictured) resulting in 7 deaths and 159 injuries. Edward Colston (d. 1721) María Teresa Ferrari (b. 1887) Douglas Albert Munro (b. 1919) Beni Montresor (d. 2001) More anniversaries: October 10 October 11 October 12

periodic table

Periodic table Group 1 2   3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Hydrogen & alkali metals Alkaline earth metals Triels Tetrels Pnicto­gens Chal­co­gens Halo­gens Noble gases Period 1 Hydro­gen1H​1.0080 He­lium2He​4.0026 2 Lith­ium3Li​6.94 Beryl­lium4Be​9.0122 Boron5B​10.81 Carbon6C​12.011 Nitro­gen7N​14.007 Oxy­gen8O​15.999 Fluor­ine9F​18.998 Neon10Ne​20.180 3 So­dium11Na​22.990 Magne­sium12Mg​24.305 Alumin­ium13Al​26.982 Sili­con14Si​28.085 Phos­phorus15P​30.974 Sulfur16S​32.06 Chlor­ine17Cl​35.45 Argon18Ar​39.95 4 Potas­sium19K​39.098 Cal­cium20Ca​40.078 Scan­dium21Sc​44.956 Tita­nium22Ti​47.867 Vana­dium23V​50.942 Chrom­ium24Cr​51.996 Manga­nese25Mn​54.938 Iron26Fe​55.845 Cobalt27Co​58.933 Nickel28Ni​58.693 Copper29Cu​63.546 Zinc30Zn​65.38 Gallium31Ga​69.723 Germa­nium32Ge​72.630 Arsenic33As​74.922 Sele­nium34Se​78.971 Bromine35Br​79.904 Kryp­ton36Kr​83.798 5 Rubid­ium37Rb​85.468 Stront­ium38Sr​87.62 Yttrium39Y​88.906 Zirco­nium40Zr​91.224 Nio­bium41Nb​92.906 Molyb­denum42Mo​95.95 Tech­netium43Tc​[97] Ruthe­nium44Ru​101.07 Rho­dium45Rh​102.91 Pallad­ium46Pd​106.42 Silver47Ag​107.87 Cad­mium48Cd​112.41 Indium49In​114.82 Tin50Sn​118.71 Anti­mony51Sb​121.76 Tellur­ium52Te​127.60 Iodine53I​126.90 Xenon54Xe​131.29 6 Cae­sium55Cs​132.91 Ba­rium56Ba​137.33 Lute­tium71Lu​174.97 Haf­nium72Hf​178.49 Tanta­lum73Ta​180.95 Tung­sten74W​183.84 Rhe­nium75Re​186.21 Os­mium76Os​190.23 Iridium77Ir​192.22 Plat­inum78Pt​195.08 Gold79Au​196.97 Mer­cury80Hg​200.59 Thallium81Tl​204.38 Lead82Pb​207.2 Bis­muth83Bi​208.98 Polo­nium84Po​[209] Asta­tine85At​[210] Radon86Rn​[222] 7 Fran­cium87Fr​[223] Ra­dium88Ra​[226] Lawren­cium103Lr​[266] Ruther­fordium104Rf​[267] Dub­nium105Db​[268] Sea­borgium106Sg​[269] Bohr­ium107Bh​[270] Has­sium108Hs​[269] Meit­nerium109Mt​[278] Darm­stadtium110Ds​[281] Roent­genium111Rg​[282] Coper­nicium112Cn​[285] Nihon­ium113Nh​[286] Flerov­ium114Fl​[289] Moscov­ium115Mc​[290] Liver­morium116Lv​[293] Tenness­ine117Ts​[294] Oga­nesson118Og​[294] Lan­thanum57La​138.91 Cerium58Ce​140.12 Praseo­dymium59Pr​140.91 Neo­dymium60Nd​144.24 Prome­thium61Pm​[145] Sama­rium62Sm​150.36 Europ­ium63Eu​151.96 Gadolin­ium64Gd​157.25 Ter­bium65Tb​158.93 Dyspro­sium66Dy​162.50 Hol­mium67Ho​164.93 Erbium68Er​167.26 Thulium69Tm​168.93 Ytter­bium70Yb​173.05   Actin­ium89Ac​[227] Thor­ium90Th​232.04 Protac­tinium91Pa​231.04 Ura­nium92U​238.03 Neptu­nium93Np​[237] Pluto­nium94Pu​[244] Ameri­cium95Am​[243] Curium96Cm​[247] Berkel­ium97Bk​[247] Califor­nium98Cf​[251] Einstei­nium99Es​[252] Fer­mium100Fm​[257] Mende­levium101Md​[258] Nobel­ium102No​[259] Primordial  From decay  Synthetic Border shows natural occurrence of the element Standard atomic weight Ar, std(E) Ca: 40.078 — Abridged value (uncertainty omitted here) Po: [209] — mass number of the most stable isotope s-block f-block d-block p-block