Class 11: Chemistry: The s‐block Elements: General Characteristics of the Compound of Alkaline Earth Metals They are fairly reactive under standard conditions. If you want to download this infographic for your The name alkaline metal comes from the fact that the oxides of the heavier members of the group react with water to form alkaline … 10.0.Introduction; 10.1. Explain the physical and chemical properties of alkali and alkaline earth metals. Oxides of Alkali Earth Metals; The oxides of alkali earth metals (MO) are obtained either by heating the metals in oxygen or by thermal decomposition of their carbonates. They have two outer valence electrons which they readily lose. The gradation in properties of alkaline earth metals: The chemical reactivity of alkaline earth metals is lower than the chemical reactivity of alkali metals. The earliest known alkaline earth was line (latin : calx). Ionization Enthalpy The oxides and other compounds of beryllium and magnesium are more covalent than those formed by the heavier and large sized members (Ca, Sr, Ba). • General Characteristics of Compounds of Alkaline Earth Metals Oxides and Hydroxides (i) The alkaline earth metals bum in oxygen to form MO (monoxide). Alkaline earth metals get the name 'alkaline' because of the basic nature of the compounds they form when bonded with oxygen. As stated previously, these are primarily aimed at secondary school students, hence the relative simplicity and generality of the information presented. (iii) These metals lose two electrons to acquire the nearest noble gas configuration. The alkaline earth metals form a variety of compounds, including oxides, hydroxides, halides, carbonates, sulphates and nitrates. This is due to increased nuclear charge and smaller size. Oxides. All alkaline earth metals undergo oxidation to form metal oxides. General Characteristics of Alkaline Earth Metals Atomic and ionic radii . The general electronic configuration of s-block elements is [noble gas] ns 1 for alkali metals and [noble gas] ns 2 for alkaline earth metals. This is due to the fact of Group 2 elements having a higher nuclear charge allow electrons to be attracted more towards the nucleus. (i) The general electronic configuration of alkaline earth metals is [noble gas] ns2. As can be seen from Figure \(\sf{\PageIndex{2}}\), Alkaline earth metals' possess large negative M 2+/0 standard reduction potentials which strongly favor the +2 cation. (ii) The atomic and ionic radii of alkaline earth metals are smaller than that of alkali metals. On moving down the group, the chemical reactivity increases. Electronic Configuration; 10.1.2. The general electronic configuration of s-block elements is [noble gas]ns1 for alkali metals and [noble gas] ns2 for alkaline earth metals. all alkaline earth metals have two valence electrons which form ions with a positive (2+) charge Abundance: calcium is the fifth most abundance element; about 4% of the earth's crust is Ca or Mg. General Characteristics of the Compounds of the Alkali Metals: 10.3: Anomalous Properties of Lithium: 10.4: Some Important Compounds of Sodium: 10.5 : Biological Importance of Sodium and Potassium: 10.6: Group 2 Elements : Alkaline Earth Metals: 10.7: General Characteristics of Compounds of the Alkaline Earth Metals: 10.8: Anomalous Behaviour of Beryllium: 10.9: Some Important Compounds … (1) Reaction with air and water: Be and Mg form an inert layer of oxide on their surface. Hundreds of thousands of tons of commercial compounds that contain sodium are used annually, including common salt (NaCl), baking soda (NaHCO 3 ), sodium carbonate (Na 2 CO 3 ), and caustic … Oxides and Hydroxides. The alkaline earth metals tend to form +2 cations. (iii)These metals have atomic and ionic radii smaller than that of alkali metals. (i) The general electronic configuration of alkaline earth metals is [noble gas] ns 2. (i) The general electronic configuration of alkaline earth metals is [noble gas] ns 2. The alkaline earth metals (beryllium, magnesium, calcium, strontium, barium, and radium) constitute group 2 of the periodic table. General Trend in Properties of Compounds of Alkali & Alkaline Earth Metal s-Block Elements chapter No 2 chemistry part 2 These halides can also be prepared by the action of aqueous halogen acids (HX) on metals oxides, hydroxides or carbonate. The alkaline earth metals are good reducing agents. From this App you can learn : List alkali metals and alkaline earth metals, write their electronic configurations. Like the alkali metals, the lightest alkaline earth metals (Be and Mg) form the most covalent-like bonds with carbon, and they form the most stable organometallic compounds. Carbonates group2 decomposes into metal oxide and Carbon dioxide on heating. (ii) These metals lose two electrons to acquire the nearest noble gas configuration. Group 2: The Alkaline Earth Metals. First, Alkaline Earth Metals form Halides of … Discuss the exceptions in general periodic trends in s–block elements. So it's important to have a look at their characteristics. 2M + O 2 ——> 2 MO (M= Be, Mg, Ca) MCO 3 ——–> … 5.2 Alkali metals: Alkaline earth metals are good reducing agents that tend to form the +2 oxidation state. Numerous types of basic heterogeneous catalysts, such as alkaline earth metal oxide, anion exchange resins and alkali metal compounds supported on alumina or zeolite can catalyze various chemical reactions such as isomerization, aldol, Michael, and Knoevenagel condensation, oxidation and transesterification [1]. Therefore, their oxidation state is +2. The metal is employed in the reduction of organic compounds and in the preparation of many commercial compounds. Atomic and Ionic Radii; 10.1.3. The strong Brønsted basicity allows for the abstraction of acidic protons, such as the α-protons of carbonyl com-pounds. In This Lecture I have discussed about the oxides and hydroxides of alkaline earth metals … If you continue browsing the site, you agree to the use of cookies on this website. The alkali metals combine directly with halogens under appropriate conditions forming halides of general formula MX. The elements belonging to these two groups are commonly known as alkali and alkaline earth metals respectively. As we know there’s many element in periodic table. The oxides of alkaline earth metals MO, are obtained either by heating the metal in dioxygen or by thermal decomposition of their carbonates. Patterns in Periodicity Group II elements Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Some General Characteristics of Compound of Alkaline Earth Metals. General Characteristics of Compounds of the Alkaline Earth Metals . General characteristics of alkaline earth metals are as follows. This reduces the size of atomic and ionic radii. In this unit, we study their properties, uses, important compounds and biological importance. The alkaline earth metals form compounds which are predominantly ionic but less ionic than the corresponding compounds of alkali metals. (iii) BeO is amphoteric in nature while oxides of other elements are ionic. Today considerable attention is devoted to the production of biodiesel (FAMEs) … As a free metal, it is used as a heat-transfer fluid in some nuclear reactors . BeO is amphoteric in nature while other oxide is basic in nature. Similar with alkali metals, alkaline earth metal also have the properties of base, as opposed to an acid. 1.2 General Properties of Alkaline Earth Metal Compounds In alkaline-earth metal-catalyzed reactions, the amphoteric acid/base character of the complexes is of extreme importance. Alkaline earth metals share many similar properties including: They are silvery, shiny, and relatively soft metals. The second of a series of infographics on the groups of the periodic table, here some general properties of the group 2 elements are examined. For example: BeO, MgO, CaO, SrO, BaO, RaO, etc. To heat MO, are obtained either by heating the metal is in... 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