The Solid State

Short Answer Type

Advertisement
Zigya App

Give reasons for the following:
Covalent crystals like diamond and silicon carbide are quite hard and difficult to break.

In covalent crystals, the shared pair of electrons give rise to very strong forces between them, therefore covalent solids like diamond and silicon carbide are quite hard and difficult to break and show very high melting points.
258 Views
  • Switch
    • Advertisement
    Explain the following with suitable examples:
    Antifluorite structure 
    359 Views
    Answer
    Give reasons for the following:
    The energy required to vapourise one mole of copper is smaller than that of energy required to vapourise one mole of diamond.
    259 Views
    Answer

    Fill In the Blanks

    A liquid which is permanently supercooled is frequently called a _____
    404 Views
    Answer

    Short Answer Type

    Give reasons for the following:
    All metals have metallic bonds but some metals are soft and having low melting points and some are hard and having high melting points.
    317 Views
    Answer
    Advertisement
    Explain the following with suitable examples:
    Piezoelectric effect (or pressure electricity)
    862 Views
    Answer
    Explain the following with suitable examples:
    Ferrimagnetism
    347 Views
    Answer

    Fill In the Blanks

    The smallest portion of a crystal which has the structure characteristic of space lattice is called the__________.
    327 Views
    Answer

    Short Answer Type

    Give reasons for the following:
    Ionic solids, inspite of being made up of ions, do not conduct electricity.
    166 Views
    Answer
    Advertisement
    <
    Give reasons for the following:
    Molecular solids are generally soft and easily compressible.
    538 Views
    Answer
    Advertisement