Question 1
Which of the following is the most stable common oxidation state of manganese?
Mn+
Mn2+
Mn3+
Mn4+
Which of the following is the most stable common oxidation state of manganese?
Mn+
Mn2+
Mn3+
Mn4+
Which metal sulfate solution is coloured?
ZnSO4 (aq)
NiSO4 (aq)
MgSO4 (aq)
Sc2(SO4)3 (aq)
Which complex has the greatest d orbital splitting?
Complex | Oxidation state of metal | Colour of complex | |
A. | [Fe(H2O)6]3+ | +3 | orange |
B. | [CoCl4]2- | +4 | blue |
C. | [Cr(OH)6]3- | +3 | green |
D. | [Cr(NH3)6]3+ | +3 | violet |
Which of the following would be paramagnetic?
K+
Cd2+
Cr3+
Y3+
Copper forms the complex [CuCl4]2-. Which statements are correct for this complex?
I and II only
I and III only
II and III only
I, II and III