1.

Match the coordination compounds given in Column I with the central metal atoms given in Column II and assign the correct code : {:(,"Column I",,"Column II"),(,"(Coordination Compound)",,"(Central metal atom)"),("A".,"Chlorophyll",1.,"rhodium"),("B".,"Blood pigment",2.,"cobalt"),("C".,"Wilkinson catalyst",3.,"calcium"),("D".,"Vitamin"B_(12),4.,"iron"),(,,5.,"magnesium"):}

Answer»

`{:("A (5)","B (4)","C (1)","D (2)"):}`
`{:("A (3)","B (4)","C (5)","D (1)"):}`
`{:("A (4)","B (3)","C (2)","D (1)"):}`
`{:("A (3)","B (4)","C (1)","D (2)"):}`

Answer :a


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