![]() ![]() Francium is intensely radioactive and extremely rare only the tiniest traces occur in the earth's crust. Sodium is the most abundant, followed by potassium, rubidium, lithium, and cesium. Alkali metals almost always form ions with a positive (+1) charge, and are so reactive as elements that virtually all occur in nature only in compound form. They also react with the oxygen in the air to give either an oxide, peroxide, or superoxide, depending on the metal. All react with water to give hydrogen gas and the metal hydroxide the heavier alkali metals react with such vigorous evolution of heat that the hydrogen often bursts into flame. The Alkali Metals explores the original discovery of these. All are shiny, soft enough to cut with a knife, and most are white (cesium is yellow-white). The alkali metals are a fascinating group of six elements that are necessary to life on Earth. The elements of group IA except hydrogen are called alkali metals. The s-block of the periodic table comprises the IA and IIA group metals along with hydrogen (H) and helium (He). All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge a. In the periodic table, potassium is one of the alkali metals. It is organized in order of increasing atomic number. s-block, p-block, d-block, and f-block is given below: s-Block of Periodic table. The periodic table is a tabular arrangement of the chemical elements. Because their outer electron structure is similar, they all have somewhat similar chemical and physical properties. A detailed discussion about four blocks of the periodic table i.e. reactions, physical properties of group 1 elements are discussed in this. When Im talking about metals, Im going to try to write it in red here. Here, we learn chemistry of alkali metals(group 1 elements) of s block. ![]() The terms used to describe groups and periods of the periodic table alkali metals, alkali earth metals, halogens, noble gases, 3. So lets go ahead and focus on metals next. melting or boiling point, reactivity, ionization. The first column on the periodic table of the chemical elements is collectively called the alkali metal group: lithium, sodium, potassium, rubidium, cesium, and francium. The trends across a period or down a group in the periodic table for properties, e.g.
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