It includes Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs) and francium (Fr). ... so elements from this group typically exhibit a -1 oxidation state; Noble Gases . The reactivity of the alkali metals increases down the group. Finally, IUPAC assigns collective names (lanthanoids and actinoids) and group numbering (1 to 18) and has investigated the membership of the group 3 elements. Valence electrons are the outermost electrons and give elements a lot of their properties. Atomic and Ionic Radii. They include lithium, sodium and potassium, which all react vigorously with air and water. Group 1: Alkali metals. This group lies in the s block of the periodic table. A great summary about Group 1 in the Periodic table - The Alkali Metals. Alkali metals or Group 1A elements belong to a common group due to its ns 1 valence electronic configuration. Lithium, Sodium, Potassium, Rubidium, Caesium and Francium. All of the elements in group 1A have one valence electron, so that should be easy to remember! Table of Data for Group 1 Elements. The elements in group 1 are called the alkali metals. Click on an element to read about the chemical and physical properties of the group to which that element belongs. Physical properties of the alkali metals Group 1 contains elements placed in a vertical column on the far left of the periodic table. Carefully inspect this data to find trends, or patterns, in the properties of group 1 elements. 1.3.1 Compared to Group 1 Elements samabrhms11 2020-02-05T06:50:38+00:00 Difference in Properties between the Transition Metals & Group I Elements The transition elements are located between Groups II and III in the centre of the Periodic Table. Valence Electrons(V.E) : Number of valence electrons in a group are same The Difference Between an Element Group and Period. They are known as s Block Elements as their last electron lies in the s-orbital. Essential Element … The alkali metals provide the best example of group trends in properties in the periodic table, with elements … Characteristics of Group: The elements of a group show similar chemical properties but there is a gradual variation in the physical properties of the elements in a group. Atomic Size: From top to bottom in a group, the size of atom increases as a new shell to the atom. The table below gives the name, atomic number, electronic configuration of the atom, the first and second ionisation energy, melting point, density and electronegativity, of the Group 1 elements (alkali metals). The alkali metals have their outermost electron in an s-orbital and this electronic configuration results in their characteristic properties. The properties of an element have periodic dependence on its atomic number but not on atomic weight. Included in Group 1 of the periodic table, the following are the alkali metals: Lithium; Sodium; Potassium; Rubidium; Caesium; Alkali Metals Properties. Flame tests are … Alkali Metals . PubChem is working with IUPAC to help make information about the elements and the periodic table machine-readable. Group 1 Elements: Alkali Metals. These are similar to Group 17 (Halogens) in a way that, it attains noble gas configuration after losing its valence electron. Physical Properties Alkali Metals: Electronic Configuration: [noble gas] ns 1, where n represents the valence shell. The general electronic configuration of elements of group 1 is ns 1.They have a strong tendency to donate their valence electron in the last shell to … The Group 1 elements The group 1 elements in the periodic table are known as the alkali metals. Chemical properties of Alkali Metals; Uses of Alkali Metals; Group 1 elements are known as Alkali Metals. 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