They are called s-block elements because their highest energy electrons appear in the s subshell. The elements in group 1 are called the alkali metals. Sections below cover the trends in atomic radius, first ionization energy, electronegativity, melting and boiling points, and density. Group 1 Elements Table of Data for Group 1 Elements. It includes Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs) and francium (Fr). They are known as s Block Elements as their last electron lies in the s-orbital. The alkali metals share similar physical. Progressing down group 1, the atomic radius increases due to the extra shell of electrons for each element. Group 1 elements are known as Alkali Metals. In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements.There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered. This means that the alkali metals all have similar chemical properties . Physical properties of the alkali metals Group 1 contains elements placed in a vertical column on the far left of the periodic table. and chemical properties. atomic and physical properties of the group 1 elements This page explores the trends in some atomic and physical properties of the Group 1 elements - lithium, sodium, potassium, rubidium and caesium. Group 1 elements are very reactive. Chemical properties of the group 1 elements Atoms of group 1 elements all have one electron in their outer shell. Hydrogen The Element H 2 is small and nonpolar so the H atoms can only attract each other You'll find more specific groups, like transition metals, rare earths, alkali metals, alkaline earth, halogens, and noble gasses. GCSE Chemistry (Science) revision covering, elements in Group 1 of the Periodic Table, alkali metals, lithium (Li), sodium (Na), potassium (K). Carefully inspect this data to find trends, or patterns, in the properties of group 1 elements. There are multiple ways of grouping the elements, but they are commonly divided into metals, semimetals (metalloids), and nonmetals. Group 1: Properties of Alkali Metals This page discusses the trends in some atomic and physical properties of the Group 1 elements - lithium, sodium, potassium, rubidium and cesium. They react with water to produce an alkaline metal hydroxide solution and hydrogen. The group 1 elements are all soft, reactive metals with low melting points. Chemical properties of Alkali Metals; Uses of Alkali Metals; Group 1 elements are known as Alkali Metals. The Element Properties: Colorless Odorless Tasteless Electron configuration is 1s1(similar to the electron configurations of group 1 elements) Classified as a non metal Therefore it doesn’t fit into any group. The elements in group 1 are called the alkali metals.. Group 1 is on the left-hand side of the periodic table. 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