Multiple Choice
Which group of elements in the periodic table is considered the least reactive?
2. Atoms & Elements
Periodic Table: Group Names
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Which family on the periodic table contains the most reactive metals?
A
Transition metals (Groups 3-12)
B
Noble gases (Group 18)
C
Alkaline earth metals (Group 2)
D
Alkali metals (Group 1)
Verified step by step guidance1
Understand that the reactivity of metals generally increases as you move down a group in the periodic table because atoms more easily lose their outer electrons.
Recall that alkali metals (Group 1) have a single electron in their outermost shell, which they tend to lose easily to form positive ions, making them highly reactive.
Compare the reactivity of alkali metals with alkaline earth metals (Group 2), which have two outer electrons and are less reactive because it requires more energy to remove two electrons.
Note that transition metals (Groups 3-12) have more complex electron configurations and generally exhibit lower reactivity compared to alkali metals.
Recognize that noble gases (Group 18) are very unreactive due to their full valence electron shells, making them chemically inert under normal conditions.
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