why group 2 elements called alkaline earth metals
named after their oxides
one naturally occurring radioisotope; magnesium and strontium do not. Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus occur naturally on earth; and all isotopes of radium are radioactive. Calcium-48 is the lightest nuclide to undergo double beta decay. Calcium and barium are weakly radioactive: calcium contains about 0.1874% cacium-41, and barium contains about 0.1062% barium-130. The alkaline earth metals are named after their oxides, the "alkaline earths", whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta. These oxides are basic (alkaline) when combined with water. "Earth" is an old term applied
Alkaline earth metal
one naturally occurring radioisotope; magnesium and strontium do not. Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus occur naturally on earth; and all isotopes of radium are radioactive. Calcium-48 is the lightest nuclide to undergo double beta decay. Calcium and barium are weakly radioactive: calcium contains about 0.1874% cacium-41, and barium contains about 0.1062% barium-130. The alkaline earth metals are named after their oxides, the "alkaline earths", whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta. These oxides are basic (alkaline) when combined with water. "Earth" is an old term applied
Alkaline earth metal
training; however, it was later announced that St-Pierre would indeed withdraw from his long-awaited title shot. Taking his place was former UFC Welterweight Champion, B.J. Penn, who defeated Hughes in a championship fight in 2004, and was beaten by St-Pierre at "UFC 58". In fact, the Penn loss was Hughes' only defeat in his last twenty fights. The "Quad-City Times" reported that Pat Miletich expressed outrage that the UFC had apparently scheduled this event alongside a bout he had forthcoming in the IFL, which caused him to miss cornering Hughes and Pulver, fighters whom he coaches, in their UFC matches.
UFC 63
liberal studies from Simon Fraser University. Shad (rapper) Shadrach Kabango (born July 18, 1982), better known by his stage name Shad or Shad K., is a Canadian alternative hip hop recording artist and broadcaster. He hosted "Q" on CBC Radio One from 2015 to 2016, and hosts the Emmy and Peabody Award-winning series "Hip-Hop Evolution". Born in Kenya, of Rwandan parents, Shad was raised in London, Ontario. His mother worked as a lab technologist in a London hospital; his father was a machinist. He attended Central Secondary School and the École secondaire Gabriel-Dumont. His debut album "When This Is Over"
Shad (rapper)
was elected to the third Knesset in 1955 as a member of Ahdut HaAvoda and was appointed Minister of Transportation. On 28 September 1956 he flew to Paris with Moshe Dayan, Shimon Peres and Golda Meir where they had meetings with French Foreign Minister Christian Pineau. The purpose of the meetings was 'to clarify ... the possibilities of joint action against Egypt'. On 29 October 1957 he suffered a broken arm after a 'Mills grenade' was thrown into the debating chamber of the Knesset. David Ben-Gurion and Golda Meir were also injured. The attack was carried out by Moshe Dwek,
Moshe Carmel
light car and motorcycle troop. By 1937, with TF numbers dropping, the Government was forced to reduce the numbers of TF units in each military district. From now on, each district would have a composite mounted rifles regiment and a composite motorised mounted rifles squadron. In the Northern Military District, WMR provided one squadron for the horsed regiment, and one troop for the motorised squadron. In 1939 the first armoured vehicles were purchased for the Army: six Bren gun carriers. Initially two were issued to each military district; later these were recalled to become the nucleus for the 2nd New
Waikato Mounted Rifles
Home Office under Theresa May The Home Office under Theresa May refers to the period during which British Prime Minister Theresa May served as Home Secretary. As a member of David Cameron's first government May was appointed as Home Secretary on 12 May 2010, shortly after Cameron became prime minister, and continued in the post as part of the second Cameron ministry following the 2015 general election. She held the post until she succeeded Cameron as prime minister on 13 July 2016. May was the second woman to be appointed to the post of Home Secretary after Jacqui Smith, and
Home Office under Theresa May
in its compounds, which are usually ionic. Hypothetical univalent salts of calcium would be stable with respect to their elements, but not to disproportionation to the divalent salts and calcium metal, because the enthalpy of formation of MX is much higher than those of the hypothetical MX. This occurs because of the much greater lattice energy afforded by the more highly charged Ca cation compared to the hypothetical Ca cation. Calcium, strontium, barium, and radium are always considered to be alkaline earth metals; the lighter beryllium and magnesium, also in group 2 of the periodic table, are often included as
Calcium
Arsenide In chemistry, an arsenide is a compound of arsenic with a less electronegative element or elements. Many metals form binary compounds containing arsenic, and these are called arsenides. They exist with many stoichiometries, and in this respect arsenides are similar to phosphides. The group 1 alkali metals and the group 2, alkaline earth metals, form arsenides with isolated arsenic atoms. They form upon heating arsenic powder with excess sodium gives sodium arsenide (NaAs). The structure of NaAs is complex with unusually short Na–Na distances of 328–330 pm which are shorter than in sodium metal. This short distance indicates the
Arsenide
as a subset of the bases. One of two subsets is commonly chosen. The second subset of bases is also called an "Arrhenius base". Alkali salts are soluble hydroxides of alkali metals and alkaline earth metals, of which common examples are: Soils with pH values that are higher than 7.3 are usually defined as being alkaline. These soils can occur naturally, due to the presence of alkali salts. Although many plants do prefer slightly basic soil (including vegetables like cabbage and fodder like buffalo grass), most plants prefer a mildly acidic soil (with pHs between 6.0 and 6.8), and alkaline
Alkali
solid surfaces, proving that it was not very volatile, like the chlorides of the other three investigated elements. However, both NoCl and NoCl were expected to exhibit nonvolatile behavior and hence this experiment was inconclusive as to what the preferred oxidation state of nobelium was. Determination of nobelium's favoring of the +2 state had to wait until the next year, when cation-exchange chromatography and coprecipitation experiments were carried out on around fifty thousand No atoms, finding that it behaved differently from the other actinides and more like the divalent alkaline earth metals. This proved that in aqueous solution, nobelium is
Nobelium
the two carbon atoms bonded together in the carbon-carbon double bond, resulting in an alcohol. When addition of water to an organic molecule cleaves the molecule in two, hydrolysis is said to occur. Notable examples of hydrolysis are the saponification of fats and the digestion of proteins and polysaccharides. Water can also be a leaving group in S2 substitution and E2 elimination reactions; the latter is then known as a dehydration reaction. Water contains hydrogen in the oxidation state +1 and oxygen in the oxidation state −2. It oxidizes chemicals such as hydrides, alkali metals, and some alkaline earth metals.
Properties of water
named after their oxides
Title: Alkaline earth metal. Content: one naturally occurring radioisotope; magnesium and strontium do not. Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus occur naturally on earth; and all isotopes of radium are radioactive. Calcium-48 is the lightest nuclide to undergo double beta decay. Calcium and barium are weakly radioactive: calcium contains about 0.1874% cacium-41, and barium contains about 0.1062% barium-130. The alkaline earth metals are named after their oxides, the "alkaline earths", whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta. These oxides are basic (alkaline) when combined with water. "Earth" is an old term applied
They form alkaline solutions.
They are alkaline earth metals because they are alkaline in nature and have earth as prefix.
because their oxides are basic (alkaline) when combined with water
because they are less reactive than the alkali metals in group 1
because their oxides are basic (alkaline) when combined with water
because they are less reactive than the alkali metals in group 1