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प्रश्न
Graphite and diamond are ____________.
विकल्प
covalent and molecular crystals
ionic and covalent crystals
both covalent crystals
both molecular crystals
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उत्तर
Graphite and diamond are both covalent crystals.
APPEARS IN
संबंधित प्रश्न
Explain the basis of similarities between metallic and ionic crystals.
Copper crystallises into a fcc lattice with edge length 3.61 × 10−8 cm. Show that the calculated density is in agreement with its measured value of 8.92 g cm−3.
An ionic compound crystallises in FCC type structure with ‘A’ ions at the centre of each face and ‘B’ ions occupying corners of the cube. The formula of compound is _______.
Classify the following solids into different types:
a. Ammonium phosphate
b. Brass
c. S8 molecule
d. Diamond
Define Anisotropy.
Answer the following in brief.
Distinguish between ionic solids and molecular solids
Which of the following is TRUE about molecular solids?
Which of the following cannot be regarded as molecular solid?
(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
Why are liquids and gases categorised as fluids?
A reddish-pink substance on heating gives off a vapour which condenses on the sides of the test tube and the substance turns blue. If on cooling water is added to the residue it turns to original colour. The substance is ______.
