Assertion :Ferrous ion is a divalent ion. Reason: Iron atom looses two electrons to carry two positive charges

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Number of ions lost or gained by an atom or compound is called its valency.
Atoms or compound having valency of one, two, or three are called univalent, divalent or trivalent respectively.
(Iron) $F e$ looses two electrons to become $F e^{+ 2}$ . $F e^{+ 2}$ is called ferrous ion and is divalent.
Other example of bivalent ion $⟶ M g^{+ 2}, C a^{+ 2}$
trivalent ion $⟶ A l^{+ 3}, B^{3 -}$

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