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WorksheetsSTPM transition elements
Total questions: 13
Worksheet time: 7mins
Why is zinc not considered a transition metal?
Zinc is not a transition metal because it gains two 4s electrons to give a 2+ion with full d subshell levels.
Zinc is not a transition metal because it loses four 4s electrons to give a 4+ion with full d subshell levels.
Zinc is not a transition metal because it loses two 4s electrons to give a 2+ion with full d subshell levels.
Zinc is not a transition metal because it gains two 4d electrons to give a 2+ion with full d subshell levels.
Density of transition metals is greater than the density of the Group 1 and 2 metals.
True
false
_______ melting and boiling point and high ________ compared with the melting in Groups 1,2 and 3.
middle
High
block
Densities
Transition elements form _________ compound and are good ________.
Coloured
Density
Middle
Catalysts
Which of the following properties about transition elements is incorrect?
Transition metals have variable oxidation state.
They are the only elements that can form coloured ions in aqueous solution.
Transition elements are good catalyst.
They are the only elements that can form complexes.
Which of the transition elements exhibit highest oxidation state?
Manganese
Vanadium
Iron
Chromium
Which of the following species is not a ligand?
Hydrogen
Ammonia
Fluorine
Water
Which of the central metal ion has the same charge as the metal ion in [Cr(NH3)6]Cl3?
K4[Fe(CN)6]
[Cr(CN)6]Cl3
[Co(H2O)6]Br2
K3[Ni(OH)6]
Identify the shape for the complex ion of [Co(NH3)2(H2O)4]Cl2.
Tetrahedral
Square planar
Octahedral
Hexagonal
Most of the transition metals are good catalyst because
they are strong reducing agent.
they can vary their oxidation state
they are reactive
they able to form stable ion
When excess ammonia is added to aqueous Cu2+ ion, a complex ion of [Cu(NH3)4]2+ is formed. Which of the following statements is true about the reaction above?
Ammonia acts as a Lewis base.
[Cu(NH3)4]2+ is not stable.
Ammonia is a stronger ligand than water.
Cu2+ is a stable ion.
During the complex formation,
the metal cation and the ligand share one electron each.
the metal cation accepts two electrons from the ligand.
two electrons from the metal are transferred to the ligand.
the metal cation donates both its d electrons to the ligand.
Arrange the melting point of manganese, magnesium and potassium in increasing order.
K<Mg<Mn
Mn<K<Mg
Mn<Mg<K
Mg<Mn<K
