The Turkish Straits (made up of the Straits of Bosphorus and the Dardanelles) and the Sea of Marmara also mark the border between the continents of Europe and Asia. Most of Turkey (97%) is located in Asia. Most of the people in Turkey are Muslims, and the country's official language is Turkish. The Turks first migrated to the area in the 11th century. Beginning in the 13th century, the entire area was part of the vast Ottoman Empire, which finally collapsed after being defeated in World War I.
Sulfur: compounds information This section lists some binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and some other compounds of sulfur. For each compound, a formal oxidation number for sulfur is given, but the usefulness of this number is limited for p-block elements in particular.
Arsenic and its compounds, especially the trioxide, are used in the production of pesticides, treated wood products, herbicides, and insecticides. These applications are declining, however. A few species of bacteria are able to use arsenic compounds as respiratory metabolites. broad variety of sulfur compounds of arsenic are known. Orpiment (As2S3) and realgar (As4S4) are somewhat abundant and were formerly used as painting pigments. In As 4 S 10, arsenic has a formal oxidation state of +2 in As 4 S 4 which features As-As bonds so that the total covalency of As is still 3.