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  2. B. J. Habibie - Wikipedia

    en.wikipedia.org/wiki/B._J._Habibie

    Bacharuddin Jusuf Habibie (Indonesian: [baxaˈrudːin ˈjusuf haˈbibi] ⓘ; 25 June 1936 – 11 September 2019) was an Indonesian politician, engineer and scientist who served as the third president of Indonesia from 1998 to 1999.

  3. Atomic physics - Wikipedia

    en.wikipedia.org/wiki/Atomic_physics

    The atom is said to have undergone the process of ionization. If the electron absorbs a quantity of energy less than the binding energy, it will be transferred to an excited state. After a certain time, the electron in an excited state will "jump" (undergo a transition) to a lower state.

  4. Richard John Uniacke - Wikipedia

    en.wikipedia.org/wiki/Richard_John_Uniacke

    Richard John Uniacke Richard John Uniacke by Robert Field Born (1753-11-22) November 22, 1753 Castletown, Kingdom of Ireland Died October 11, 1830 (1830-10-11) (aged 76) Mount Uniacke, Nova Scotia Richard John Uniacke (November 22, 1753 – October 11, 1830) was an abolitionist, lawyer, politician, member of the Nova Scotia House of Assembly and Attorney General of Nova Scotia. According to ...

  5. Lone pair - Wikipedia

    en.wikipedia.org/wiki/Lone_pair

    In VSEPR theory the electron pairs on the oxygen atom in water form the vertices of a tetrahedron with the lone pairs on two of the four vertices. The H–O–H bond angle is 104.5°, less than the 109° predicted for a tetrahedral angle, and this can be explained by a repulsive interaction between the lone pairs. [2] [3] [4]

  6. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    [35]: 118 Moreover, the periodic table could predict how many atoms of other elements that an atom could bond with — e.g., germanium and carbon are in the same group on the table and their atoms both combine with two oxygen atoms each (GeO 2 and CO 2). Mendeleev found these patterns validated atomic theory because it showed that the elements ...

  7. Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Main_page

    The Boot Monument is an American Revolutionary War memorial located in Saratoga National Historical Park in the state of New York.Sculpted by George Edwin Bissell and erected during 1887 by John Watts de Peyster, it commemorates Major General Benedict Arnold's service at the Battles of Saratoga while in the Continental Army, but does not mention him on the monument as Arnold later defected ...

  8. Atom - Wikipedia

    en.wikipedia.org/wiki/Atom

    Dalton concluded that in these oxides, for every two atoms of iron, there are two or three atoms of oxygen respectively (Fe 2 O 2 and Fe 2 O 3). [ b ] [ 8 ] [ 9 ] As a final example: nitrous oxide is 63.3% nitrogen and 36.7% oxygen, nitric oxide is 44.05% nitrogen and 55.95% oxygen, and nitrogen dioxide is 29.5% nitrogen and 70.5% oxygen.

  9. Richard G. F. Uniacke - Wikipedia

    en.wikipedia.org/wiki/Richard_G._F._Uniacke

    Richard Gordon FitzGerald Uniacke, FRSAI (19 August 1867 – 11 November 1934) [1] was a British genealogist and librarian. He was the eldest son of the Rev. Robert FitzGerald Uniacke, late vicar of Tandridge, Surrey , a descendant of an old Irish family, the Uniackes of Uniacke and Castleton, County Cork. [ 2 ]