When we consider the extended periodic table, we can see that among the various table elements have English letters below which are two Moo Moo with A and ending with B by English letters at the end of the village is below: -The villages of A means that A group called the Ellipse element yields the Zen Temple of the Executive (the Representative Element), or that the main village (Main Group Element): Mu Mu 1A to 8A element. -The villages of B implies that B is called the silicone thaeron chemical group (Transition Element) including the elements village 1B to 8B village. 1. the elements, or alkali metal village 1A (Alkali Metals). Elemental alkali metals 1A or village. Most Silver (with the exception of the element caesium (Cs), which has a gold mix), there is a low density body read. Have the dexterity to a very high reaction by reaction with elemental and fierce reaction among 7A can with water, good drivers? The storage must be stored in oil. The natural conditions are often found in the form of compounds, such as sodium chloride (NaCl), lithium oxide (Li2O), sodium hydroxide (NaOH), etc. That in a nutshell is the high-metallicity 1A examples of elements among which we should know: 1A elements as follows: -Lithium (Li) has good sombat endothermic is often used in heat transfer. Battery polarity is used because it has the potential to provide a good electron. -Sodium (Na) is doing very little, so the reaction was wong necessarily to store oil in our daily life to take advantage of compound sodium salts such as sodium chloride (NaCl) or curry paste, which is used in cooking, sodium hydrogen carbonate, foo or powder (NaHCO3), which is used to make bread, foo, etc. 2. that among alkaline earth metals or 2A (Alkaline-earth Metals). That in a nutshell or alkaline earth metal 2A There is a body, but there is a hardness and density is greater than that among most of the silver color 1A react well with that but the reaction among 7A and less violent that moo Moo 2A 1A elements have valence electrons are just two outermost particle is drawn or lost an electron. So that is a treasure among 2A as a good example of the metal element in a nutshell. 2A should be recognized: -Beryllium (Be) is a metal which has the same steel gray. Strong, lightweight brittle, but it is often used for alloys to make stronger metals. -Magnesium (Mg) is found in nature, it was found that is a component of the crust, about 2%, and is soluble in water as a raw material used in the top 3 manufacturing aluminum-magnesium alloy. -Of calcium (Ca) is a soft grey metal used for the extraction of uranium (U) is a chemical element that is important particularly because life is an important component of the body structure of organisms, such as teeth and bones, etc. -Barium (Ba) is more in the nature. There are properties similar to that of calcium, can react with the air well, you can find only in compounds. With the benefit of oil drilling The same minerals the medical x-ray imaging, etc. 3. the element 7A village or that-Lo and Jane (Halogen) That village or that-Lo and Jane 7A is a non-metallic properties. With agility to the reaction high. In natural conditions, we often found that the elements of this group as a partner molecule, which consists of two atoms of the element 7A village properties are combined with hydrogen (H), there will be severe, such as acid, haidonkhlorik acid, vitamin c is (HCl), acid (HF), full hydraulic auto Zurich, etc. That in a nutshell is an electron from the valence 7A that others have good sombat as non-ferrous metals high. Examples of elements that should be recognized: 7A village. -Fluorine (F) has a status of yellow light, and gas is harmful to living things by pure fluorine is very dangerous, can cause skin burns on the joints. A common use of fluorine compounds in the form of, for example, sodium fluoride (NaF), which is used in small quantities in toothpaste helps prevent cavities. -Chlorine (Cl), have the status of a yellowish brown gas to save weight over the air with a smell and a serious poison. A good disinfection is used in water or in the pool to make clean water, chlorine can be found in the form of sea salt and other compounds, such as curry salt (NaCl) or sodium chloride, etc. -Bromine (Br) is only one type of group 7A elements-pork with a status of failed. Red can easily evaporate at room temperature is harmful to human tissue, because the vapors can cause eye irritations and sensitive skin. -Iodine (I) is a solid state. Not defrosting is necessary to sustain the life of the organism, because it is an element that is important in the production of some important hormones. In addition, it is also useful in the production of iodine disinfectant and dye cloth. 4. the elements village 8A sluggishly (Inert Gas) or gas. Consists of various elements: helium (He), neon (Ne), argon (Ar), krypton (Kr), Xenon (Xe), and radon (Rn) that this village also called sluggishly due to chemical gas in gas at 8A is the level of normal temperature and pressure, and is agility in reaction to low. There are 8 valence electrons that are due are then difficult to lose?
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