group 1 The first vertical column of elements in the periodic table, starting with lithium and ending with francium. Also called the alkali metals. element A substance made of one type of...

This page discusses the trends in some atomic and physical properties of the Group 1 elements - lithium, sodium, potassium, rubidium and cesium. Sections below cover the trends in atomic radius, first ionization energy, electronegativity, melting and boiling points, and density.

2025年1月31日 · Alkali metal, any of the six elements of Group 1 (Ia) of the periodic table—lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).

This page discusses the trends in some atomic and physical properties of the Group 1 elements - lithium, sodium, potassium, rubidium and cesium. Sections below cover the trends in atomic radius, first ionization energy, electronegativity, melting and boiling points, and density.

2025年1月5日 · Elements in each group of the periodic table share similar chemical properties and show patterns in reactivity and physical characteristics. Understanding these trends helps explain the behaviour of certain elements and their roles in everyday applications.

The Group 1 elements are called the alkali metals. They are placed in the vertical column on the left-hand side of the periodic table .

group 1 The first vertical column of elements in the periodic table, starting with lithium and ending with francium. Also called the alkali metals. element A substance made of one type of...

2024年11月29日 · Revision notes on Group 1 (Alkali Metals) for the Edexcel GCSE Combined Science syllabus, written by the Science experts at Save My Exams.

Group 1 elements are elements with one electron in their outer shell (found in an s-subshell) and include the alkali metals and hydrogen.

2023年6月15日 · Group 1 elements are also known as alkali metals. In an atom of ‘s’ block elements, the last electron enters ‘s’ orbital of the outermost orbit. In this Chemistry article, learn about Group 1 Elements in detail. Also learn about their Electronic Configuration of Group 1 Elements, Occurrence, Properties and Uses. What are s-Block Elements?