a) Write the IUPAC name of the ionisation isomer of [Ni(NH$_3$)$_5$NO$_3$]Cl. b) How are coordination compounds useful in biological processes? (Give two uses.)

(a) [Ni(NH₃)₅Cl]NO₃ — pentaamminechloridonickel(II) nitrate. (b) Haemoglobin (Fe complex) carries O₂; chlorophyll (Mg complex) drives photosynthesis; vitamin B₁₂ is a Co complex.

CBSE Class 12 · 2004 · All India Compartment · Coordination CompoundsShort Answer

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a) Write the IUPAC name of the ionisation isomer of [Ni(NH

_{3}

)

_{5}

_{3}

]Cl.
b) How are coordination compounds useful in biological processes? (Give two uses.)

Solution

(a) Swap the counter-ion with the coordinated anion:

[Ni (N H_{3})_{5} Cl] N O_{3}

Name: \textbf{pentaamminechloridonickel(II) nitrate}.
(b) Biological roles of coordination compounds (any two):

Haemoglobin — an iron(II)–porphyrin complex — transports O $_{2}$ in blood.
Chlorophyll — a magnesium complex — captures light for photosynthesis.

(Also: vitamin B

_{12}

, a cobalt complex, is essential for red-blood-cell formation.)

CBSE Class 12 Board · 2004 · All India Compartment · Subjective

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CBSE Class 12 · 2004 · All India Compartment · Coordination CompoundsShort Answer

Solution

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