Chemical Bonding and Molecular State NDA Questions

NDA Chemistry

Chemical Bonding and Molecular State MCQ Questions


1.
According to the Kössel-Lewis approach, atoms combine with each other mainly to attain the stable electronic configuration of the nearest:
A.
Noble gas
B.
Transition metal
C.
Alkali metal
D.
Halogen
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ANSWER :
A. Noble gas
2.
The octet rule states that atoms tend to have how many electrons in their valence shell to attain chemical stability?
A.
Six
B.
Four
C.
Eight
D.
Ten
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ANSWER :
C. Eight
3.
Hydrogen and helium attain stability by acquiring how many electrons in their valence shell, a pattern known as the duplet rule?
A.
Four
B.
Six
C.
Eight
D.
Two
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ANSWER :
D. Two
4.
A chemical bond formed by the complete transfer of one or more electrons from one atom to another is called a/an:
A.
Metallic bond
B.
Coordinate bond only
C.
Covalent bond
D.
Ionic (electrovalent) bond
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ANSWER :
D. Ionic (electrovalent) bond
5.
A chemical bond formed by the mutual sharing of electrons between two atoms is called a/an:
A.
Van der Waals bond
B.
Covalent bond
C.
Metallic bond
D.
Ionic bond
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ANSWER :
B. Covalent bond
6.
The early explanation that noble gases are chemically inert due to a completely filled outer shell was proposed by:
A.
Kössel and Lewis
B.
Heisenberg and Schrödinger
C.
Pauling and Slater
D.
Bohr and Rutherford
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ANSWER :
A. Kössel and Lewis