Question

Give a one-word answer.

Group 1 elements are known as-

Answer 1

Modern periodic table:

• The modern periodic table is an arrangement of all the elements known in accordance with their increasing atomic number and recurring chemical properties.
• It is a tabular display of 118 chemical elements which consists of horizontal rows called periods and vertical columns are called groups.
• All elements in a group have the same number of valance electrons, and in period elements have the same number of electron shells.
• There are seven periods and eighteen groups in the modern periodic table.

Group 1A :

• This group is of alkali metals.
• The alkali metals are so-called because of their reaction with water to form water-soluble bases called alkalies.
• They occupy the first column of the periodic table.
• They are highly electropositive and reactive metals as their valance shell have one electron.
• Alkali elements are Lithium(Li), Sodium(Na), Potassium (K), Rubidium (Ru), Cesium (Cs), and Francium (Fr).