Saif al-Islam al-Gaddafi
Saif al-Islam al-Gaddafi (born June 25, 1972) is one of the sons of Muammar al-Gaddafi. Saif studied architecture and political science. He holds a PhD from the London School of Economics. Saif presides the Gaddafi International Foundation of Charitable Associations. In 2011, the International Criminal Court issued an arrest warrant against Saif. The court said that Saif may have committed crimes against humanity. According to the court, the Gaddafi regime used torture, killed people and raped women to incite the population to support the regime.
After the Libyan civil war, Gaddafi was arrested. He tried to flee but was caught. He was flown to Zintan and has stayed there.
Kim Jong-suk
Kim Jong-suk(김정숙, December 24, 1917 – September 22, 1949) was a Korean independence activist, and communist politician. She was the first wife of North Korean President Kim Il-sung, and the mother of Kim Jong-Il, North Korean Great Leader.
Pope Pius VI
Pope Pius VI (; 25 December, 1717 – 29 August 1799), born Giovanni Angelo Braschi, was an Italian priest of the Roman Catholic Church and the 251st Pope from 1775 to 1799.
Pope Clement XIII named him treasurer of the Roman Church in 1766.
In 1775, Pope Clement XIV made Braschi a cardinal.
Cardinal Braschi was elected pope in 1775; and he chose to be called Pius VI.
Pope Pius was involved in Italian and European political disputes.
Mariner 2
Mariner 2 was a NASA spacecraft. It was the second spacecraft in the Mariner program. Mariner 2 was the first successful mission from Earth to another planet.
Mariner 2 was launched on August 27, 1962 aboard an Atlas-Agena B rocket at Cape Canaveral Air Force Station. The aim of the Mariner 2 mission was to fly-by the planet Venus and return information on the planet's atmosphere, magnetic field, charged particle environment, and mass. Mariner 2 was at its closest to Venus, at a distance of 34,773 km, on December 14, 1962. Orbital perihelion was on December 27, 105,464,560 km away. The last radio signal from Mariner 2 was received on January 3, 1963. Mariner 2 is still orbiting around the Sun today.
The spacecraft's design was exactly the same as that of Mariner 1. Mariner 1 was the first spacecraft in the Mariner program, but it had to be destroyed shortly after launch because its trajectory was wrong.
The spacecraft found out that the surface temperature on Venus was at least 425 °C (797 °F), on both the day and night sides. It discovered that Venus rotates in the opposite direction from most planets in the Solar System. The spacecraft also found that the atmosphere of Venus is mostly of carbon dioxide and that there is a very high pressure at the planet's surface. Continuous cloud cover was detected but no magnetic field was, however. It also found that solar wind is continuous and that the density of cosmic dust between planets is much lower than it is near Earth.
Period 1 element
A period 1 element is an element in the first period (row) of the periodic table. The periodic table is arranged in rows to show repeating properties of the elements. When the atomic number increases, the element have different properties. A new row begins when chemical properties repeat. It means that elements in the same group have similar properties. The first period has less elements than any other periods in the periodic table. There are only two elements in the first period: hydrogen and helium. We can explain why "there is less elements in the first row" in modern theories of atomic structure. This is because in quantum physics, this period fills up the 1s orbital. Period 1 elements follows the duet rule, they only need two electrons to complete their valence shell. These elements can only hold two electrons, both in the 1s orbital. Therefore, period 1 can have only two elements.
As period 1 only has two elements, there are no remarkable periodic trends.
Although both hydrogen and helium are in the s-block, they do not behaves similarly to other s-block elements. There is argument over where these two elements should be placed in the periodic table.
The position of hydrogen is sometimes above lithium, sometimes above carbon, sometimes above fluorine, sometimes above both lithium and fluorine (appearing two times), or float above the other elements and not belongs to any group in the periodic table.
The position of helium is almost always above neon (which is in the p-block) in the periodic table because it is a noble gas. However, sometimes the position of it is above beryllium because they have similar electron configuration.
Hydrogen (symbol:H) is a chemical element. Its atomic number is 1. At standard temperature and pressure, hydrogen has no color, no smell and no taste. It belongs to nonmetal, and it is highly flammable. It is a diatomic gas with the molecular formula H. Its atomic mass is 1.00794 amu, making hydrogen the lightest element.
Hydrogen is the most abundant of the chemical elements. The abundance of hydrogen is roughly 75%. Stars in the main sequence are mainly composed of hydrogen in its plasma state. However, there are less hydrogen on Earth. Therefore, hydrogen is industrially produced from hydrocarbons (e.g. methane). We use elemental hydrogen locally at the production site. The largest markets almost equally divided between fossil fuel upgrading, such as hydrocracking, and ammonia production, mostly for the fertilizer market. Hydrogen may be produced from water using the process of electrolysis, but this process is significantly more expensive commercially than hydrogen production from natural gas.
The most common naturally occurring isotope of hydrogen, known as protium, has a single proton and no neutrons. In ionic compounds, it can take on either a positive charge, becoming a cation composed of a bare proton, or a negative charge, becoming an anion known as a hydride. Hydrogen can form compounds with most elements and is present in water and most organic compounds. It plays a particularly important role in acid-base chemistry, in which many reactions involve the exchange of protons between soluble molecules. As the only neutral atom for which the Schrödinger equation can be solved analytically, study of the energetics and spectrum of the hydrogen atom has played a key role in the development of quantum mechanics.
The interactions of hydrogen with various metals are very important in metallurgy, as many metals can suffer hydrogen embrittlement, and in developing safe ways to store it for use as a fuel. Hydrogen is highly soluble in many compounds composed of rare earth metals and transition metals and can be dissolved in both crystalline and amorphous metals. Hydrogen solubility in metals is influenced by local distortions or impurities in the metal crystal lattice.
Helium (He) is a colorless, odorless, tasteless, non-toxic, inert monatomic chemical element that heads the noble gas series in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.