Write down the IUPAC name of K 3 Cr C 2 O 4 3 .

K 3 Cr C 2 O 4 3 is made up of the cation K + and the anion Cr C 2 O 4 3 3 - C 2 O 4 is a negatively charged ligand with - 2 charge on it. Let the oxidation state of Cr be x . ⇒ 3 ( + 1 ) + x + 3 ( - 2 ) = 0 ⇒ 3 + x - 6 = 0 ⇒ x - 3 = 0 ⇒ x = 3 So, the oxidation state of Cr is 3 . Following things are to be kept in mind while writing the IUPAC name of an anionic complex: 1) While writing the IUPAC name of the complex, the cationic part of the complex is written first and then the anionic part. 2) Ligands are written in alphabetical order, mentioning their respective numbers first prefixed as tri, di, etc., followed by their names. Here, we have a total 3 ions of ligand C 2 O 4 2 - , named as trioxalato. 3) Here, since the complex ion is negatively charged, the central metal ion's name should end with the suffix 'ate', and its oxidation number should be written in Roman numeral in closed brackets. 4) It must be noted that the names of all species should start with small letters and must not start with capital letters. So, the IUPAC name of K 3 Cr C 2 O 4 3 will be potassium trioxalatochromate(III).

E M B I B E

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 7

HARD

JEE Main

IMPORTANT

Earn 100

Since chelate rings containing over six atoms are generally not stable, a single bidentate chelating ligand cannot replace two monodentate ligands which are located in the trans positions of a square planar complex.

Important Questions on Coordination Compounds

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 8

Which has maximum EAN of the underlined atoms?

$\{Cr = 24, Co = 27, Fe = 26, Ni = 28\}$

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 10

Select the correct statement.

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 11

{Fe}_{4} {[Fe (CN)_{6}]}_{3}

is a blue coloured complex. The average oxidation number of

Fe

in

{Fe}_{4} {[Fe (CN)_{6}]}_{3}

is

a

, the oxidation number of central iron atom is

b

, the oxidation number of counter iron atom is

c

; the

a, b, c

, respectively, are

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 12

An imperfect complex of a complex compound is

100 %

ionized; the compound is called

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 13

Some salts, although containing two different metallic elements, give test for one of them in solution. Such salts are

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 14

The donor atoms in

EDTA

are

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 15

The oxidation number of platinum in

[Pt {({NH}_{3})}_{5} Cl] {Cl}_{3}

is

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 7 - Coordination Compounds>DPP>Q 16

A coordination complex of cobalt has the molecular formula containing five ammonia molecules, two chlorine atoms for one cobalt atom and one nitro group. One mole of this compound produces three-mole ions in an aqueous solution. On reacting, this solution with an excess of silver nitrate solution, two moles of