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The reaction of group 2 metals with oxygen follows the following general equation: 2M (s) + O2 (g) → 2MO (s) Where M is any metal in group 2. We can see this is a redox reaction by looking at the changes in oxidation number of the metal, M, and oxygen. M = 0 → +2 so the metal has been oxidised. O = 0 → -2 so the oxygen has been reduced.
Group 2 Reactivity. As a result of the deceases in ionisation energy, the elements become more reactive going down the group as it gets easier for the atoms to lose two electrons and become 2+ ions. This trend is shown by looking at reactions of the Group 2 metals: With dilute hydrochloric acid: bubbles of hydrogen gas are given off much faster ...
Jul 12, 2023 · Exercise 21.1.1 21.1. 1. Based on the positions of the group 14 elements C, Si, Ge, Sn, and Pb in the periodic table and the general trends outlined in this section, classify these elements as metals, semimetals, or nonmetals. predict which element forms the most stable compounds in the +2 oxidation state. predict which element differs the most ...
Understanding Chemistry. PERIODIC TABLE GROUP 2 MENU. Atomic and physical properties . . . Discusses trends in atomic radius, ionisation energy, electronegativity and melting point of the Group 2 elements. Reactions with water . . . Looks at the trends in the reactions between the Group 2 elements and water. Reactions with oxygen . . .
This page explores the trends in some atomic and physical properties of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium. You will find separate sections below covering the trends in atomic radius, first ionisation energy, electronegativity and physical properties. Even if you aren't currently interested in all these ...
2M (s) + O2 (g) → 2MO (s) Where M is any metal in Group 2. Remember that Sr and Ba also form MO 2. The reaction of all metals with water follows the following general equation: M (s) + 2H2O (l) → M (OH)2 (s) + H2 (g) The exceptions to this general equation are: Be which does not react with water. Mg which forms MgO (s) and H 2 (g) The ...
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Dec 6, 2019 · Group 1 metals are less reactive than group 2 metals. Its valence shell contains 2 electrons. They have low electronegativity. Compounds of alkali metals are often insoluble in water. Alkaline metals are usually Shiny, silvery. They have ions with a +2 charge. They are solid. They are harder, denser, stronger.
