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Usually, there is no need to store these elements in oil, unlike the group one elements. The noble gasses have complete valence electron shells, so they act differently. Group 2 contains soft, silver metals that are less metallic in character than the Group 1 elements. Compare this with the coloured compounds of most transition metals. Included in the group two elements are Beryllium(Be), Magnesium(Mg), Calcium(Ca), Strontium(Sr), and Barium(Ba). - The Group 2A elements are called alkaline earth metals. Groups 1-2 termed s-block elements. x Remember that the reactivity increases as you move down Group 2 (see ionisation energies) Physical properties: x All light metals. - The nonmetals of Group 7A are called halogens. - The Group 1A elements are called alkali metals. Alkali Earth Metals – Group 2 Elements. Finally, IUPAC assigns collective names (lanthanoids and actinoids) and group numbering (1 to 18) and has investigated the membership of the group 3 elements. (3) Both group 1 and group 2 elements produce white ionic compounds. 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.All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2. The group 16 elements of modern periodic table consist of 5 elements oxygen, sulphur, selenium, tellurium and polonium. Group 2 elements generally react to form compounds in which the group 2 element has an oxidation state of +2, beryllium will also do this but it has a tendency to form covalent rather than ionic compounds. • Define allotropes and provide examples. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements. Every element in the first column (group one) has one electron in its outer shell. Elements in Group 2 are called alkaline earth metals which is most similar about the alkaline earth metals. PubChem is working with IUPAC to help make information about the elements and the periodic table machine-readable. The elements in this group are also known as the chalcogens or the ore-forming elements because many elements can be extracted from the sulphide or oxide ores. 186 Chapter 7 The Elements Section 7.2 Properties of p-Block Elements Objectives • Describe and compare properties of p-block elements. Group 2 Group 2 elements: Redox eactions: The Group 2 elements: x These are also called the alkaline earth metals as their hydroxides are alkaline. x They have reasonably high melting and boiling points. The group 2 elements are called the alkaline earth metals. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium … elements in the same group are similar to each other; A section of the periodic table showing metals and non-metals. Introduction. Unlike other groups, noble gasses are unreactive and have very low electronegativity or electron affinity. Seven valence electrons, so elements from this group typically exhibit a -1 oxidation state; Noble Gases . • Explain the importance to organisms of selected p-block elements. Groups 3-12 are termed d-block elements. They are transition metals because they have electrons in their d sublevels. They are the electrons involved in chemical bonds with other elements. x Compounds are white or colourless. The transition metals are in groups 3 - 12. For a metal, alkali earth metals tend to have low melting points and low densities. Those outer electrons are also called valence electrons. The elements in each group have the same number of electrons in the outer orbital. Groups 3-11 are termed transition elements. The group number is an identifier used to describe the column of the standard periodic table in which the element appears. 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