Q: The pair(s) of diamagnetic ions is(are)

aligned La ^ +3 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \\ Yb ^ +2 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \\ Lu ^ +3 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \\ La ^ +2 [ _ 54 Xe ] 5 ~d ^1 & -paramagnetic \\ Ce ^ +4 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \\ Ce ^ +3 [ _ 54 Xe ] 4 f ^1 & -paramagnetic \\ Yb ^ +3 [ _ 54 Xe ] 4 f ^ 13 & -paramagnetic \\ Lu ^ +2 [ _ 54 Xe ] 4 f ^ 14 5 ~d ^1 & -paramagnetic aligned

Question 1

The pair(s) of diamagnetic ions is(are)

Accepted Answer

aligned La ^ +3 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \ Yb ^ +2 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \ Lu ^ +3 [ _ 54 Xe ] 4 f ^ 14 & -diamagnetic \ La ^ +2 [ _ 54 Xe ] 5 ~d ^1 & -paramagnetic \ Ce ^ +4 [ _ 54 Xe ] 4 f ^0 & -diamagnetic \ Ce ^ +3 [ _ 54 Xe ] 4 f ^1 & -paramagnetic \ Yb ^ +3 [ _ 54 Xe ] 4 f ^ 13 & -paramagnetic \ Lu ^ +2 [ _ 54 Xe ] 4 f ^ 14 5 ~d ^1 & -paramagnetic aligned

Question 2

Paragraph: When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is observed in which a complex $ P $ is formed. In a strong acidic medium, the equil

Accepted Answer

KI + K _3 [ Fe ( CN )_6 ] K _4 [ Fe ( CN )_6 ]+ 1 2 I _2 Moles of KI required =2

Question 3

Paragraph: When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is observed in which a complex $ P $ is formed. In a strong acidic medium, the equil

Accepted Answer

Zn ^ 2+ + K _4 [ Fe ( CN )_6 ] K _2 Zn _3 [ Fe ( CN )_6 ]_2 OR Zn ^ 2+ + K _4 [ Fe ( CN )_6 ] Zn _2 [ Fe ( CN )_6 ]

Question 4

In the scheme given below, X and Y , respectively, are Metal&#160;halide &#160; &#160; &#160; &#160; &#8594; &#160; aq .&#160; NaOH &#160; &#160; &#160; &#160; &#160;White&#160;precipitate &#160; P +

Accepted Answer

The metal halide can be manganese dichloride. It gives white precipitate of manganese hydroxide. MnCl 2 &#8594; aq . NaOH Mn OH 2 P + NaCl Q The white precipitate manganese hydroxide on reaction with lead dioxide and concentrated sulphuric acid gives purple coloured solution permanganate. Mn OH 2 &#8594; Conc . H 2 SO 4 , heat PbO 2 excess MnO 4 - purple &#160; solution The sodium chloride gives  Cl 2  on reaction with  MnO OH 2 , &#160; conc . H 2 SO 4 . The chlorine formed can o

Question 5

Paragraph: The reaction of K _ 3 [ Fe ( CN )_ 6 ] with freshly prepared FeSO _ 4 solution produces a dark blue precipitate called Turnbull's blue. Reaction of K _ 4 [ Fe ( CN )_ 6 ] with the FeSO _ 4

Accepted Answer

Answer option index: 2

Question 6

Consider the following reactions (unbalanced) Z n + H o t &#160; c o n c . &#160; H 2 S O 4 &#8594; G + R + X Z n + c o n c . &#160; N a O H &#8594; T + Q G + H 2 S + N H 4 O H &#8594; Z a &#160; p r

Accepted Answer

Zn + H 2 SO 4 Hot&Conc. → ZnSO 4 N + SO 2 ® + H 2 O X Zn + 2NaOH Conc. → NaZnO 2 T + H 2 Q ZnSO 4 + H 2 S + NH 4 OH → ZnS S + H 2 O X + NH 4 2 SO 4 Y

Question 7

Fusion of M n O 2 with K O H in presence of O 2 produces a salt W . Alkaline solution of W upon electrolytic oxidation yields another salt X . The manganese containing ions present in W and X , respec

Accepted Answer

M n O 2 + 2 KOH + 1 2 O 2 → Δ K 2 M n O 4 ( W ) + H 2 O Oxidation state + 6 Paramagnetic and green colored salt → shape : Tetrahedra of anion M n O 4 2- Purple coloured and tetrahedra shape

d and f Block Elements — Previous Year Questions & Solutions