MCQ-36
The catalytic activity of transition elements is due to
A. d-d transition
B. High binding energy
C. Variable oxidation state
D. Low binding energy
Answer: C
MCQ-37
Which of the following transition element show only one oxidation state?
A. Cu
B. Zn
C. Sc
D. Cr
Answer: B
MCQ-38
Select the isoelectronic transition elements/ions.
A. Co+2, Ni+3
B. Mn+2, Fe+3
C. Sc+3, Ti+4
D. All of these
Answer: D
MCQ-39
The coordination number of central metal atom/ion in the given compound is [Pt(OH)2(NH3)4]SO4
A. 2
B. 4
C. 6
D. 8
Answer: C
MCQ-40
The total number of unpaired electrons in an atom of atomic number 24 when it carries +3 charge
A. 2
B. 3
C. 4
D. 6
Answer: B
