The D And F Block Elements

Chemistry
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The atomic numbers of elements of second inner transition elements lie in the range of :

A
88 to 101
B
89 to 102
C
90 to 103
D
91 to 104
Medium
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The Lanthanide contraction relates to:

A
oxidation states
B
magnetic state
C
atomic radius
D
valence electrons
Easy
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Transition metals are good electrical conductor because ___________.

A
they are metals
B
they are solids
C
they have free electrons in outer energy levels
D
they are hard
Easy
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Catalytic activity of transition elements and their compounds is due to their _______.

A
small size
B
vacant d-orbitals
C
higher densities
D
colour
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Elements which generally exhibit variable oxidation states and form colored ions are ___________.

A
metalloids
B
transition elements
C
non-metals
D
gases
Medium
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Which compound is volatile on heating?

A
B
C
D
none of these
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The following is not a noble metal

A
Au
B
Cu
C
Ag
D
Pt
Easy
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