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10 questions
Choose the statement that defines transition elements correctly.
A transition element is one that forms cations with a completely filled d-subshell of electrons
A transition element is one that forms at least one compound with a partially filled d-subshell of electrons
A transition element is one that can speed up then the rate of chemical reactions in industrial processes
A transition element is one whose compounds dissolve in water to form aqueous solutions which are colored
Predict the characteristic of transition metal elements Ti to Cu of atomic number 22 to 29.
Good electrical and heat conductor
Have a uniform decrease in atomic radius
Have two electrons in the 4s orbital
Have lower first ionization energy than the alkali metals
Indicate electron configuration of Mn3+ ion. (Mn = 25)
[Ar]4s2 3d10
[Ar]4s2 3d2
[Ar]3d5
[Ar]3d4
The total number of electrons in the 3d orbital of Ti3+ is (Given Ti = 22)
1
2
3
4
Select the element that forms a colorless compound with the oxidation state of +4
Ti
V
Cr
Mn
Identify which of the following ions are most likely to form coloured compounds
Sc3+
Cu+
Zn2+
Cr3+
The ground state electronic configuration of Cr is
[Ar] 4s1 3d5
[Ar] 4s2 3d4
[Ar] 3d4
[Ar] 4s1 3d3
Choose the correct electron configuration for cobalt. (Co = 27)
[Ar]4s2 3d6
[Ar]4s2 3d7
[Ar]4s2 3d5
[Ar]4s2 3d4
Identify which of the following are paramagnetic
Ni2+
V5+
Ti4+
Mn7+
Which of the following element is not transition metal?
Copper
Iron
Zinc
Manganese
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