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1. Which type of solid is held together by relatively weak dispersion forces? A.

ID: 530529 • Letter: 1

Question

1. Which type of solid is held together by relatively weak dispersion forces?

A. ionic solid

B. metal

C. molecular solid

D. ceramic

E. semiconductor

2. Ionic solids have ________ melting points, and are ________.

a. high; malleable

b. high; brittle

c. low; malleable

d. low; brittle

e. high; soft

3. Pure solid metals ________

a. do not crystallize.

b. are amorphous.

c. often crystallize in closest-packed structures.

d. often crystallize in very complex unit cells.

e. are like liquids with the nuclei flowing through a sea of electrons.

Explanation / Answer

Ans 1. C . Molecular solids

Dispersion forces are the weak forces that are caused by the temporary dipoles .

These temporary dipoles can exist in non polar molecules and induce a dipole in neighbouring molecules initiating dispersion forces.

Molecular solids consists of discrete molecules and are held together by weak dispersion forces .