Download Metal Questions

Metal Questions
Which is an essential feature of a ligand?
A. a negative charge
B. an odd number of electrons
C. the presence of two or more atoms
D. the presence of a non-bonding pair of electrons
Which reaction results in the formation of a coloured substance?
A. 2Li(s) + 2H2O(l) 2LiOH(aq) H2 (g) 
B. 2Na(s) Cl2 (g)  2NaCl(s) 
C. Cl2 (g) + 2NaI(aq) 2NaCl(aq) I2 (s)
D. Ag(aq) Cl(aq) AgCl(s)
Which statement best describes the attraction present in metallic bonding?
A. the attraction between nuclei and electrons
B. the attraction between positive ions and electrons
C. the attraction between positive ions and negative ions
D. the attraction between protons and electrons
Which is the best description of metallic bonding?
A. The attraction between oppositely charged ions
B. The attraction between protons and electrons
C. The attraction between positive ions and delocalised electrons
D. The attraction between nuclei and electron pairs
Which of the following salts form coloured solutions when dissolved in water?
I. 3 ScCl
II. 3 FeCl
III. 2 NiCl
IV. 2 ZnCl
A. I and II only
B. II and III only
C. III and IV only
D. I, II, III and IV
2006
10. Which electrons are lost by an atom of iron when it forms the Fe3ion?
A. One s orbital electron and two d orbital electrons
B. Two s orbital electrons and one d orbital electron
C. Three s orbital electrons
D. Three d orbital electrons
(2000) Give the electronic configuration of the d-block element titanium. State three
characteristics of d-block elements and account for each in terms of electrons.
(7)
(2002)
Complex ions are a feature of the chemistry of d-block elements. For each of the
following
reactions give the formula of the complex ion formed and deduce its shape.
[2]
(i) Some iron metal is dissolved in sulfuric acid and left exposed to air until a
yellow
solution is formed.
[2]
(ii) A solution containing copper(II) ions is added to concentrated hydrochloric
acid,
forming a yellow solution.
[2]
(iii) A small amount of sodium hydroxide solution is added to silver nitrate
solution.
Ammonia solution is added until a colourless solution is obtained.
(2)
2005
(d) Two characteristics of the d-block (transition) elements are that they exhibit
variable
oxidation states and form coloured compounds.
(i) State two possible oxidation states for iron and explain these in terms of
electron (2)
arrangements.
(ii) Explain why many compounds of d-block (transition) elements are coloured.
(3)
State the type of electron transitions that cause colour in complexes of transition
metals. [1]
.................................................................
........
[1]
(b) Which analytical technique would give bond length and bond angle data for a
sample of a
transition metal complex?
.................................................................
........