20 янв. 2022 г. · They all have low melting points and low densities and the melting point decreases going down the group as the atomic radius increases and the ...

30 июн. 2023 г. · This page discusses the trends in some atomic and physical properties of the Group 1 elements - lithium, sodium, potassium, rubidium and cesium. Trends in Atomic Radius · Trends in Electronegativity

Going down group 1 from top to bottom the elements display the following trends: (a) Atomic radius increases. (b) First ionization energy decreases. (c) Second ...

Group 1 elements are known as Alkali Metals. They are called s-block elements because their highest energy electrons appear in the s subshell.

Explaining the trend the metal. The reactivity of group 1 elements increases as you go down the group because: the atoms become larger. the outer electron ...

24 сент. 2024 г. · Chemical properties of the Group I metals · More vigorous fizzing · Moves rapidly on the surface of the water · Dissolves quickly.

The alkali metals are soft, with low melting and boiling temperatures. The have low densities - Lithium, Sodium and Potassium are all less dense than water.

1. They have low melting and boiling points. · 2. They are good conductors of heat and electricity · 3. They have a low ionisation energies that decreases down ...

The chemical reactivity (how vigorously they react) of the alkali metals increases down group 1. This means that sodium reacts more vigorously with water than ...