Group I Elements

Topic Content:

Lithium –  ₃ L₁ → 2, 1

Sodium –_{1 1} Na → 2, 8, 1

Potassium – ₁₉ K → 2, 8, 8, 1

Group I elements include lithium, sodium, potassium, rubidium, caesium, and francium. Group 1 elements are the most reactive metals. They are alkali metals.

They are univalent elementsUnivalent cation means the cation which donates its one valence electron to the bond. There are some elements with univalent cations. e.g. - S block Group (1) elements like Na ,Li…... More .                                                                              

Na → Na⁺ + e^–                       

K → K⁺ + e^– 

The elements ionize to form positive ions (cationsCations are positively charged ions (atoms or groups of atoms that have more protons than electrons due to having lost one or more electrons). Cations are attracted to negatively charged electrodes... More), and they form electrovalent compoundsAn electrovalent or ionic bond is formed when a metal atom transfers one or more electrons to a non-metal atom. Ionic or electrovalent compounds are those compounds which are formed by... More. The ease with