5.3 Group 2 Element Color Element Color Li Scarlet Be － Na Yellow Mg － K Lilac Ca Brick-red Rb Red Sr Crimson Cs Blue Ba Apple-green The Flame Color: 5. Group 2: The Alkaline Earth Metals Atomic radius Atomic radius increases down Group 2. In the alkali metals (Group 1) and alkaline earth metals (Group 2) the melting point decreases as atomic number increases, but in transition metal groups with incomplete d-orbital subshells, the heavier elements have higher melting points. Group 2 elements are both reactive metals and strong reducing agents. Free. In many ways the chemistry of group 2 elements (the alkaline earth metals) mimics that of group 12 elements because both groups have filled s shells for valence electrons. Properties: Silvery metals. ; They all have reasonably high melting and boiling points, low densities and they all form colourless compounds. Group 2 metals. Alkaline and Alkaline Earth Metals Maita Virgini Tan. 2M(s) + O 2 (g) 2MO(s) e.g. between group 2 and 3. All group 2 metals form stable nitrides, but only Lithium in group 1. Beryllium is a component of beryl or emerald. 1 Trends. Therefore, they are very reactive. Created: Nov 1, 2011. Unlike the group 2 metal hydroxides, the sulfates become less soluble on descending the group, with magnesium sulfate the only truly soluble sulfate of the group. Updated: Jun 5, 2013. doc, 49 KB. The larger the anion the easier the distortion, as seen with the carbonate ion. They have a low enthalpy of ionization and high electropositive character, the alkaline earth metals have a strong tendency to lose valence electrons. Strontium and barium sulfates are effectively insoluble. 1. 1.3.2 (a) Redox Reactions of Group 2 Metals. The CO 2 produced … Preview and details Files included (1) doc, 49 KB. BERYLLIUM MAGNESIUM CALCIUM STRONTIUM BARIUM RADIUM 5.3 Group 2 4. The name alkaline metal comes from the fact that the oxides of the heavier members of the group react with water to form alkaline solutions. They react with acids to form salts. Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor), Jen Moreau, SarMal and 1 other. Group 2 the periodic table abhi bansal. Inorganic Chemistry : Group 2 Thivyaapriya. 112 160 197 215 222 Atomic Radii nm 113 160 … The nuclear charge increases when going from group 1 to group 2. Group 2, Alkaline Earth Metals. As one goes down the group, the atoms have more shells of electrons making the atom bigger and there is a decrease in effective nuclear charge with successive elements because of increased screening, and so the electrons are less firmly held to the nucleus. Li 3 N: Hexagonal layers of Li with N at the centers of the hexagons, forms (Li 2 N) –. Which means less energy is required to remove an electron and therefore less energy is required for a group 2 metal to melt or boil Or is magnesium just an exception these are metals remember so it’s about the attraction between delocalised electrons and the positive metal ions therefore the smaller they are the stronger the bond between these two ) Make predictions based on assuming each metal is being emitted at 100% of the group ELV (i.e. Beryllium is unusual and is not studied at GCSE. 5.3 Group 2 I II III IV Li Be B C Period 2 Na Mg Al Si Period 3 Increasing electronegativity … Interestingly, barium sulfate is also called barium meal when fed to patients at hospitals to be used to scan the digestive system. As one goes down the group, the atoms have more shells of electrons making the atom bigger and there is a decrease in effective nuclear charge with successive elements because of increased screening, and so the electrons are less firmly held to the nucleus. 2.4, 2.5, 2.6 Assessed Homework Task (mark scheme) 2.4, 2.5, 2.6 Test (mark scheme) More Exam Questions on 2.4 Redox Reactions, 2.5 Group 7, The Halogens and 2.6 Group 2, The Alkaline Earth Metals (mark scheme) 2.6 Exercise 1 - trends in group 2 . Although many characteristics are common throughout the group, the heavier metals such as Ca, Sr, Ba, and Ra are almost as reactive as the Group 1 Alkali Metals. The alkaline earth metals are in group 2 of the periodic table. 3 Solubility. This experiment indicates the relative reactivity of elements within the group. 1 decade ago. What are Group 2 Elements? The alkaline earth metals (beryllium, magnesium, calcium, strontium, barium, and radium) constitute group 2 of the periodic table. 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