Using the periodic table, the element Rb, Rubidium is a member of the Alkali metal (Group IA) of the periodic table.
The periodic table is a systematic arrangement of elements in order of their atomic number into a set of 8 primary Columns each of which is called a Group and a set of 7 rows each of which is called a Period.
- It is evident from the picture attached that Rb is an alkali metal element as it is placed in the group IA of the periodic table (more specifically the period 5).
- Alkali metals are characterized by the presence of 1 electron in their outermost shell; a state of existence which is evident in Rb (Rubidium).
Ultimately, Rb, Rubidium is a member of the Alkali metal (Group IA) of the periodic table.
Other notable group include:
- Chalcogens (Group vi) elements
- Halogens (Group vii) elements
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