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Among K, Ca,Fe and Zn the element which can form more than one binary compound

Among K, Ca,Fe and Zn the element which can form more than one binary compound with chlorine is

Options

(a) Fe
(b) Zn
(c) K
(d) Ca

Correct Answer:

Fe

Explanation:

Among the given options, only Fe shows variable oxidation states so it can form two chlorides, viz. FeCl2 and FeCl3

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