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NEET2004Chemistryd and f Block ElementsActual

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

Options

  1. AFe
  2. BZn
  3. CK
  4. DCa

Correct answer

A. Fe

Step-by-step solution

Metal ions having variable oxidation number can form more than one types of binary compound. Fe shows +2,+3 oxidation states. Thus, it can form FeCl ₃, FeCl ₂ . Related Theory Binary compounds are chemical compounds comprising of two distinct elements. For example, water, calcium chloride etc. Caution Zn , even being a transition metal shows only +2 oxidation state, due to fully filled 3 d subshell.

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