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The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). [ 1 ] The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.
The United States Naval Special Warfare Command (USNSWC), also known as NAVSPECWARCOM and WARCOM, [4] is the naval component of United States Special Operations Command, the unified command that oversees and conducts the nation's special operations and missions. Originating in the unconventional naval units formed during World War II, WARCOM ...
In chemistry and atomic physics, the main group is the group of elements (sometimes called the representative elements) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements (except hydrogen ...
In the of the elements, each column is a group. In chemistry, a group (also known as a family) [1] is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between groups 2 and 3, are not numbered. The elements in a group have similar physical or chemical ...
UAS groups of the United States military. The U.S. Department of Defense (DoD) classifies unmanned aerial systems (UAS) into "Groups" according to their size and capability, a joint system that replaced the service branches' separate categorization schemes in 2011. [1][2][3] The "Group" system has five categories, whose capabilities increase ...
Soldiers may wear up to three badges from groups 3 and 4 above the ribbons. One badge from either group 1 or group 2 may be worn with badges from groups 3 and 4 above the ribbons so long as the total number of badges above the ribbons does not exceed three. Only three badges (from groups 3, 4, or 5) can be worn on the pocket flap at one time.
Theory of Knowledge (TOK) v. t. e. The International Baccalaureate Diploma Programme (IBDP) is a two-year educational programme primarily aimed at 16-to-19-year-olds in 140 countries around the world. The programme provides an internationally accepted qualification for entry into higher education and is recognized by many universities worldwide.
IB Group 1 subjects. The Group 1: Studies in language and literature (previously First Language) subjects of the IB Diploma Programme refer to the student's first language (native language or otherwise best language). [1] Three courses are available: Language A: literature, Language A: language and literature and an interdisciplinary subject ...