In reactions of elements with the oxygen, we get products –oxides. The products of these reactions are what we might expect. It explains why it is difficult to observe many tidy patterns. Redox reactions of Group 2 metals (a) describe the redox reactions of the Group 2 elements Mg - Ba: (i) with oxygen, Group 2 elements react vigorously with oxygen. 2.11 Group II elements and their compounds. 3.1.2 (d, e) Reaction of Group 2 Oxides with Water and Group 2 compounds as Bases. Test yourself questions - Answers8. Group 2 reactions Reactivity of group 2 metals increases down the group Mg will also react slowly with oxygen without a flame. The elements of Group 2 are beryllium, magnesium, calcium, strontium, barium, and radioactive radium. As I said earlier, they are powerful reducing agents. Group 2: Group 2 elements are known as alkaline earth metals. Their oxides and hydroxides are alkaline in nature. The group 2 consists of the elements beryllium(Be), magnesium(mg), calcium(Ca), strontium(Sr), barium(Ba) and radium(Ra). The Oxygen is -2 in the OH-ion, and -2 in water. Reactions of alkali metals with oxygen. Reaction of iodine with water. eg. These compounds readily react with water except a few exceptions. In this video I take a look at some of the different ways in which group 2 elements can react. Lesson 2: Group 2 Compounds. These compounds are usually ionic in nature. Iodine, I 2 is not reactive towards with oxygen, O 2, or nitrogen, N 2.However, iodine does react with ozone, O 3, the second allotrope of oxygen, to form the unstable yellow I 4 O 9, the nature of which is perhaps I(IO 3) 3.. 3.1 The periodic table. 8. You will find this discussed on the page about electronegativity. Chemical world. When these metals (M) are heated in oxygen they burn vigorously to produce a white ionic oxide, M2+O2-. The group 2 metals will burn in oxygen. Topic 4A: The elements of Groups 1 and 2. The Group II elements are powerful reducing agents. All group 2 elements will react with oxygen to produce a metal oxide-Mg would need to be heated but Barium will react at room temp. All Group II elements react with acid to give hydrogen gas and the corresponding salt; M(s) + H⁺(aq) → M²⁺(aq or s) + H2(g) ; where M = A Group II element. Mg ribbon will often have a thin layer of magnesium oxide on it formed by reaction with oxygen. 1.3.2 (a) Redox Reactions of Group 2 Metals. Oxides of all Period 3 elements except Cl and Ar could be made on the same method: burning the element in the air in a combustion reaction when the element will react with the oxygen in the air to produce the oxide of the element. Ba(s) + O 2 (g) BaO 2 (s) The more active members of Group IIA (Ca, Sr, and Ba) react with water at room temperature. Reaction with acids. with acid to produce hydrogen gas and the corresponding halide salt. This is an A2 Chemistry PowerPoint Presentation on period 3 elements – reactions with oxygen. It also deals very briefly with the reactions of the elements with chlorine. Learner Activities10 3. know the reactions of the elements Mg to Ba in Group 2 with oxygen, chlorine and water; OCR Chemistry A. Module 3: Periodic table and energy. To know the reaction between group 2 metal oxides and water **2. The general electronic configuration of these elements is ns 1 and ns 2 respectively. Activity 3 – The reactions of Group 2 elements - Answers6. This page mainly looks at the reactions of the Group 1 elements (lithium, sodium, potassium, rubidium and caesium) with oxygen - including the simple reactions of the various kinds of oxides formed. Mg + H2O ---> Mg(OH)2 + H2. What volume of hydrogen gas is produced if 2.50 g of magnesium metal is dissolved in excess hydrochloric acid in a fumehood with a temperature of 25 °C and a pressure of 1 bar (100 kPa)? reacts with water. 2Sr (s) + O2 (g) ----> 2SrO (s) solubility of group 2 hydroxides increase down the group. Compare this with the coloured compounds of most transition metals. 2 Mg(s) + O 2 (g) 2 MgO(s) Calcium, strontium, and barium can also form peroxides. When zinc metal reacts with oxygen gas, {eq}2Zn(s) + O_2(g) \to 2ZnO(g) {/eq}, large amounts of light and heat are released. Chemistry. This page mainly looks at the reactions of the Group 1 elements (lithium, sodium, potassium, rubidium and caesium) with oxygen - including the simple reactions of the various kinds of oxides formed. Chemical properties. 2.11.3 investigate and describe the reactions of the elements with oxygen, water and dilute acids; Republic of Ireland. The Facts The reactions with oxygen Formation of simple oxides As group 2 in the periodic table comprises of metals, the reactivity of group 2 elements towards chlorine increases when working our way down the group 2 metals. 1. Activity 1: – Reactions and properties of Group 2 elements - Answers4. MgO + 2HCl MgCl 2 + H 2O Reactions with oxygen. (i) The Reactions of Group 2 Elements with Oxygen. This property is known as deliquescence. **By the end of this lesson students should be able to: **1. M (s)----> M 2+ (aq) + 2e- M = Mg, Ca, Sr,Ba --> I will be using 'M' as the general symbol for a Group II element in this topic. Exposed to air, it will absorb water vapour from the air, forming a solution. Acidic oxide: Beryllium reacts slowly with acids and has no reaction at room temperature. Ba + H2O ---> Ba(OH)2 + H2. 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