List some ways group 2A elements differ from group 1A elements. They are all in the second column of the periodic table. What elements are alkaline earth metals? (7.1) a. element in baking soda that turns a flame yellow b. metallic element found in limestone c. radioactive alkali metal 34. On alkaline earth metal ions? Classification: Alkaline Earth Metals Discovery: 1798 Discoverer: Fredrich Wohler Uses: spacecraft, missiles, aircraft. But there is one element which creates the covalent bond. The exception is for beryllium. See more. Alkaline-earth metal definition, any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals. When these metals are mixed in solutions, they create a pH that is higher than 7, a level that is defined as alkaline. Facts about Alkaline Earth Metals 1: ionic bonds. The alkaline earth metals get their name because of their reactive properties. Similarly, all the alkaline earth metals react with the heavier group 15 elements to form binary compounds such as phosphides and arsenides with the general formula M 3 Z 2. Higher lattice energies cause the alkaline earth metals to be more reactive than the alkali metals toward group 15 elements. Reactions of Alkaline Earth Metals. The alkaline earth metals have the high thermal and electrical conductivity. Heading to Group Two So we just covered the alkali metals in Group I. Like the alkali metals, these elements are found in compounds rather than pure form. The elements of the alkaline earth metals include beryllium, magnesium, calcium, strontium, barium, and radium. Alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). (7.1) 35. Atomic radius Moving from the top to the bottom … Most elements in alkaline earth metal present the ionic bonds. The alkaline earth metals are found in group IIA of the periodic table, which is the second column of elements. All of the alkaline earth metal atoms have a +2 oxidation state. All the alkaline earth metals have two electrons in their valence shell, so they lose two electrons to form cations with a 2+ charge. (7.1) 33. You will find the alkaline earth metals right next door in Group II. This is the second most reactive family of elements in the periodic table.Do you know why they are called alkaline?When these compounds are mixed in solutions, they are likely to form solutions with a pH greater than 7. They are called earth metals because their compounds were first found in plant remains in soil. All the discovered alkaline earth metals occur in nature. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids). The alkaline earth metals are a family of chemical elements that make up the second group of the modern periodic table. The alkaline earth metals comprise the group 2 elements. Alkaline Earth Metals . Identify the element that fits each description. Name: Magnesium Symbol: Mg Atomic Number: 12 Atomic Mass: 24.3 Number of Protons/Electrons: 12 Number of Neutrons: 12 Classification: Alkaline Earth Metals The alkaline earth metals are a group of elements in the periodic table. But once again, beryllium has low reaction. They are sometimes referred to as the group 2 elements. When you mix the elements with water, they react strongly. Alkaline earth metals Alkaline earth material is any element that you can find in the second column of the periodic table for example: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), radium (Ra). 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