Elementary Idea of Metallic Bonding NEET Questions

Physical Chemistry - Chemical Bonding and Molecular Structure

Elementary Idea of Metallic Bonding MCQ Questions


7.
Metallic lustre (the shiny appearance of metals) is explained by:
A.
Polarisation of metal ions by incident photons
B.
Total internal reflection of light by metal kernels
C.
Free electrons absorbing incident light energy and re-emitting it across the visible spectrum
D.
Diffraction of light by the regular lattice spacing
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ANSWER :
C. Free electrons absorbing incident light energy and re-emitting it across the visible spectrum
8.
The strength of metallic bonding generally INCREASES with:
A.
Decrease in the number of valence electrons and increase in atomic size
B.
Increase in electronegativity of the metal atom
C.
Increase in the number of valence electrons contributed per atom and decrease in the size of the metal kernel
D.
Increase in atomic mass alone, irrespective of valence electron count
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ANSWER :
C. Increase in the number of valence electrons contributed per atom and decrease in the size of the metal kernel
9.
Which of the following metals is expected to have the strongest metallic bonding?
A.
Mercury (Hg)
B.
Sodium (Na)
C.
Potassium (K)
D.
Tungsten (W)
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ANSWER :
D. Tungsten (W)
10.
In the electron sea model, the positively charged species fixed at the lattice points of a metal are called:
A.
Free radicals
B.
Kernels (metal cations)
C.
Anions
D.
Dipoles
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ANSWER :
B. Kernels (metal cations)
11.
Which property is a direct consequence of the high mobility of electrons in metals?
A.
High electronegativity
B.
High hardness
C.
High density
D.
High thermal conductivity
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ANSWER :
D. High thermal conductivity
12.
Metallic bonding is typically found in:
A.
Elements with completely filled valence shells
B.
Elements with high electron affinity and high electronegativity
C.
Elements that readily form covalent networks
D.
Elements that have low ionisation enthalpy and few valence electrons
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ANSWER :
D. Elements that have low ionisation enthalpy and few valence electrons