chemistry

EAMCET QUESTIONS FROM CHAPTER TRANSITION ELEMENTS PART-1

1.Which one of the following sets correctly represent the increase in the paramagnetic property of the ions ?

1) Cu 2+ < V 2+ < Cr2 + < Mn2+	2) Cu2+ < Cr 2+ < V2 + < Mn2+
3) Cu 2+ < V 2+ < Cr2 + < Mn2+	4) V 2 + < Cu 2 + < Cr 2 + < Mn 2+

2.Which one of the following statements is correct ?

1)  Ionic radius of Fe³⁺ is greater than Fe²⁺

2)  Atomic radius of chlorine atom is greater than the ionic radius of chloride ion.

3)  Electron affinity of phosphorus is greater than nitrogen

4)   Cs₂O is strongly acidic in nature

3.

éCo

(

NH

3 )5

SO

ù Br

and éCo

(

NH

3 )

Br ù SO

are pair of ____ isomers

ë

4

û

ë

5û

4

1) lonization

2) Ligand

3) Co-ordination

4) Hydrate

4.Which one of the following pairs of complexes has the effective atomic number equal to 36 for the transition element ?

1) ëéCo (NH3 )6 ûù Cl3 ; K3 ëé Fe (CN )6 ûù	2) ëéCo( NH3 )6 ûù Cl3 ; ëéCr (H2 O )6 ûù Cl3
3) ëéFe (CO )5 ûù ; K 4 ëé Fe(CN )6 ûù	4) ëéFe (CO )5 ûù ; K 3 ëé Fe (CN )6 ûù

5.When AgNO₃solution is added in excess to 1M solution of CoCl₃xNH₃, one mole of AgCl is formed. What is the value of ‘x’?

1) 1                               2) 2                               3) 3                               4) 4

6.Which of the following pair of Transition metal ions, have the same calculated values of spin only

	magnetic moment ?
	1) Ti +2  and V +2	2) Fe+2  and Cu +2	3) Cr+2  and Fe+2	4) Co+2  and Ti +2
7.	What is the correct order of spin only magnetic moment (in BM) of Mn2 + , Cr 2+ and V 2+  ?
	1) Mn2+ > V 2 + > Cr2+ 2) V 2 + > Cr 2 + > Mn 2+		3) Mn2+ > Cr 2 + > V 2+	4) Cr 2+ > V 2 + > Mn2+

8.A complex compound of _CO⁺³ with molecular formula CoClX , YNH₃ gives a total of 3 ions when dissolved in water. How many _Cl ^- ions satisfy both primary and secondary valencies in this complex?

 (1) 3                             (2) 1                              (3) 4                              (4) Zero

9.Assertion (A) : The spin only magnetic moment of _Sc⁺³ is 1.73 BM.

Reason (R) : The spin only magnetic moment (in BM) of an ion is equal to  n (n + 2)

(1)  Both A and R are true and R is the correct explanation of A.

(2)  Both A and R are true and R is not the correct explanation of A.

(3) A is true but R is not true.                           (4) A is not true but R is true.