State whether the following statement is true or false:
Iron shows valencies of $Fe^{2+}$ and $Fe^{3+}$.
Iron shows valencies of $Fe^{2+}$ and $Fe^{3+}$.
(TRUE) The statement is True.
Iron $(Fe)$ is a transition metal that exhibits variable valency.
It can lose two electrons to form the ferrous ion $(Fe^{2+})$ or three electrons to form the ferric ion $(Fe^{3+})$.
Iron $(Fe)$ is a transition metal that exhibits variable valency.
It can lose two electrons to form the ferrous ion $(Fe^{2+})$ or three electrons to form the ferric ion $(Fe^{3+})$.
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$(a) F_2$
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$(d) C_2H_6$
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