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प्रश्न
Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).
उत्तर
Melting and boiling points of covalent compounds are generally low.
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संबंधित प्रश्न
Why covalent compounds are different from ionic compounds?
State the reason to explain why covalent compounds "are bad conductors of electricity".
Give one example of a molecule containing a double covalent bond
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
What are the conditions necessary for the formation of covalent molecules?
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
Give examples for the following:
Two liquid non polar compounds.
What is the difference between :
Ionic compounds and covalent compounds
Write the molecular formula of the given compound.
Acetic acid
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
