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Transition Elements - 1
1.
_____________ are those elements that have partially fileld d-or f acb shell in atomic state or any common oxidation state.
a) Transition elements
b) Coordination sphere
c) Complex formation
d) Corrosion
2.
Zn, Cd and Hg exhibit only one property of transition elements that is _____________.
a) Transition elements
b) Complex formation
c) Centeral metal atom or ion
d) Interstitial compounds
3.
In a transition series, melting points _________ upto the middle of the series, and then _______ till the end of the series.
a) decrease, Increase
b) Increase, decrease
c) decrease
d) Interstitial compounds
4.
Fe+3 and Mn+2 are strongly para magnetic as they both have _________ unpaired electrons.
a) Six
b) Four
c) Five
d) Three
5.
A metal atom or ion surrounded by a number of ligands is called ___________.
a) Calcium Phosphate
b) Centeral metal atom or ion
c) Transition elements
d) Coordination sphere
6.
The central metal atom or ion alongwith ligands is called _________________.
a) Coordination sphere
b) Corrosion
c) Calcium Phosphate
d) Centeral metal atom or ion
7.
____________ is a complex formed when ploy dentate ligands coordinate with the same metal atom or ion forming one or more ring structures.
a) Corrosion
b) Chelate
c) Centeral metal atom or ion
d) Anionic
8.
Suffix ate comes at the end of the name of metal if the complex is ______________.
a) Chelate
b) Corrosion
c) K
2
Cr
2
O
7
d) Anionic
9.
Wrought iron has ________ to ___________% carbon.
a) 0.12 to 0.25
b) 0.12 to 1.25
c) 0.21 to 0.30
d) 0.12 to 0.50
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