Classification of Elements and Periodicity in Properties - Result Question 28
####28. Among K, $Ca, Fe$ and $Zn$, the element which can form more than one binary compound with chlorine is
(a) $Fe$
(b) $Zn$
(c) $K$
(d) $Ca$
[2004]
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Solution:
- (a) Among the given options, only Fe shows variable oxidation states so it can form two chlorides, viz. $FeCl_2$ and $FeCl_3$.
