Final answer:
Lithium and potassium are both alkali metals in Group 1 of the periodic table with similar chemical properties due to their shared number of valence electrons. Despite these similarities, potassium has a larger atomic radius than lithium.
Explanation:
Lithium (Li) and Potassium (K) are in the same group on the periodic table, known as Group 1 or the Alkali Metals. They share similar chemical properties due to having the same number of valence electrons, with lithium having one valence electron and potassium having one as well.
Both lithium and potassium are shiny, conduct heat and electricity well, and are highly reactive. For instance, lithium is used in greases, batteries, and pharmaceuticals, while potassium is essential for many biological functions in living organisms.
Comparing their atomic sizes, potassium has a larger atomic radius than lithium since atomic radius generally increases as you move down a group in the periodic table.
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