Similarities Group 2 properties Data Both groups are very reactive and react strongly to form the respective products. 1.3 Forms +2 ions. The alkaline earth metals in the group (2) have two electrons in their valence shells. The medicine compounds. They also belong to the s block elements as their outer electrons are in the s orbital. Because of their high reactivity, the alkaline earths are not found free in nature. Elements in the same group of the periodic table show trends in physical properties, such as boiling point. Also known as water, this particular compound is made up of two elements – oxygen and hydrogen. Group 2 Elements - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. The reactions take place on a clear plastic sheet over a worksheet. Going down the group, the first ionisation energy decreases. AQA Chemistry. Group 2 Elements are called Alkali Earth Metals. The atomic and ionic radii down the group increases due to the addition of a new shell. The elements become increasingly electropositive on descending the Group. Electrons of same group show similar chemical and physical properties. 3 Melting Point. Alkaline earth metals are very flammable. 5.3 & 5.4 Group 2 What is the outcome from syllabus? Apparatus (per group) - One student worksheet - One clear plastic sheet (eg. While both oxygen and hydrogen are more common in gaseous form, water is a fluid form. Note that the periodic table of elements page is provided in order to help navigate abundant chemical element data available in PubChem - each element also has a dedicated page with a lot more information available about each element including references. 2.11 Group II elements and their compounds. They have the same number of electrons in their outer shell, so similar chemical properties. Going down the group, the electrons in the 'sea' of delocalised electrons are further away from the positive nuclei. true. 2 Atomic Radius. You will find separate sections below covering the trends in atomic radius, first ionisation energy, electronegativity and physical properties. Rate this resource. The Facts. 1 Electron Arrangments. The Elements Properties are dominated by the fact that they lose their e-easily Most Violently reactive of all the metals React strongly with H 2 O(l) the vigor of the reaction increase down the group (ex: 2Na(s) + 2H 2 O(l) Æ2NaOH(aq) + H 2 (g)) The alkali metals are all too easily oxidized to be found in their free state in nature Great reducing agents. Calcium carbonate and phosphate minerals are Click the links or see below for more details on each. Beryllium reacts with steam at high temperatures (typically around 700°C or more) to give white beryllium oxide and hydrogen. The atomic radii of group 13 elements are lesser than their corresponding group 2 elements. Progressing down group 2, the atomic radius increases due to the extra shell of electrons for each element. Elements in the same group of the periodic table show trends in physical properties, such as boiling point. Learn the basics about Alkaline Earth metals which are a group of chemical elements in the periodic table with very similar properties? The property that is common to all group 2 elements is that they tend to form ionic bonds by losing electrons making these atoms positive charge. ohp sheet). Properties of Group 2 Elements. The physical properties of the group 3 elements are affected by the presence of a d electron, which forms more localised bonds within the metals than the p electrons in the similar group 13 metals; exactly the same situation is found comparing group 4 to group 14. Also included is the reactions of group 2 with water, oxygen and chlorine. 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