Load more ...

Its position in the periodic table: Located in the center of the transition elements of the periodic table, and is divided into: the main elements of the transition, "is a set of elements that ends fitted to the field of e-parity d, s and divided into three series, self cooking each containing ten elements." Transition elements of Interior, "is a set of elements that ends fitted-mail to the field of valence d, f and include two series are located at the bottom of the table and contains all 14 of which element known forms a series lanthanides and sequential Alokdinedat. First group sub (1B): metals currency." Used in instrument currency "ills: using elements of the first group in the instrument currency? General properties of metals Currency: 1 / resistance to corrosion due to air 2 / has a high affinity for drag and road 3 / delivered good heat and electricity ills: because it melts at a relatively low temperature. these elements take In some of her vehicle oxidation number (+1) for ease of lost electron from the outer sphere. ills: gold and silver Ikunan covalent bonds? because elemental gold and silver of the heavy elements, the positive charge in Noatehma high, and therefore tend to Union other elements by covalent bond. said copper in most of its compounds take a number of oxidative stress (+2) and silver (+1) and gold (+3) Copper (Copper) cu: defines the shape of the metal free, enter into many uses to extract self cooking copper smelted raw materials in incinerators self (to get rid of the largest possible amount of sulfur) and mix with coal and silica, and when the temperature rises to a higher required 450 layered copper by chemical equation: Cu2 S + 2Cu2O 6Cu + SO2 and copper output is pure and to remove impurities from it and get the metal pure is purified process of electrolysis. Properties of copper: self cooking Physical properties: metal metallic color red in its pure and its alloys have attractive colors, melting point 1083 and 2595 while the boiling point m, is characterized by Bkablath high electrical and thermal conductivity. Chemical properties: reacts copper with halogens (elements of Group 7 a) copper compounds: take copper salts numbers oxidation self cooking (+1 or +2) 1 / copper sulfate duo: CuSO4 most important salts of copper self cooking due to the multiplicity of its practical applications and the availability and quality in nature H2SO4 + CuO CuSO4 + H2O and copper sulfate powder duo white color in case anhydrous severe tendency to absorb moisture which turns its color to blue copper self cooking sulphate duo called aqueous CuSo.5HO (blue vitriol) when exposed to temperatures of up to 250 turns into a copper sulfate anhydrous duo. 2 / copper oxides: A - copper oxide duo: CuO b - copper oxide mono: Cu2O silver: (Silver) Ag silver compounds: self cooking 1 / silver nitrate: AgNO3 is silver nitrate compounds of the most famous silver salt which is transparent to attend by adding acid nitrogen Ag + 2HNO3 AgNO3 + NO2 + H2O and silver nitrate easy water solubility of gold: its existence in nature: there is in the nature of a free on the metallic form is united with other elements to extract gold: 1 / Jerash rocks, container and washed with water where it goes butter and deposited gold heavy 2 / treat if within the layer of dirt with a solution Saaand sodium self cooking to be a solution of gold complex Na [Au (CN) 4], which reduces the zinc-to extract self cooking gold properties self cooking gold Physical metal yellow Shiny Lin malleable and clouds melt gold at the 1063 and a boiling point of 2809, a good conductor of heat and electricity. Properties of gold chemicals: the advantage self cooking of gold a lack of active chemical is not affected by air and Abahamad rules and brines except aqua regia, which dissolves the gold and aqua regia mixture of acid, chlorine and acid nitrogen second sub-group: Fe: extraction of iron: supports the principle of the preparation of iron in the industry reduced from its oxides, which burning Turning to Co process is done in the Furnace which temperature ranges where between (400 - 1800) 3Fe2O3 + CO 2Fe3O4 + CO2 3Fe3O4 + CO 3FeO + CO2 3FeO + CO 2FeO + CO2 and the ratio of carbon self cooking in the iron of paramount importance in the industry self cooking Mining iron: Iron Rolling three types: cast iron (cast) wrought iron (soft) steel (stainless) Chemical properties: for cast iron and soft steel qualities one: 1 / interaction with the air does not affect the dry air on the iron in the normal temperature, while if left in moist air long formed layer structure of color called rust and consists of iron oxide water (2Fe2O3. 3H2O) and iron hydroxide Triple Fe (OH) 3 and characterized this class as protect iron from continuing corrosion 2 / interaction with water if we passed the water vapor on iron heated to the point of irritation consists of iron oxide magnetic Fe + 4H2O Fe3O4 + 4H2 3 / interaction with non-metals burn iron heated in chlorine component of ferric chloride triple 2Fe +3 Cl2 2FeCl3 if heated iron filings with sulfur to be iron sulfide binary Fe + S FeS 4 / interaction with the acid reacts self cooking both acid, chlorine and sulfuric acid at normal temperature with iron filings Fe + HCl FeCl2 + H2 iron compounds: 1 / iron compounds duo iron oxide duo FeO brass duo FeSO4 iron chloride duo FeCl2 iron hydroxide duo Fe (OH) 2 2 / iron compounds triple-oxide Triple Iron Fe2O3 iron chloride triple Fe2Cl3 brass trio Fe2 (SO4) 3 and peace, mercy and blessings of God
Load more ...
Atom