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प्रश्न
Non-polar covalent compounds are ______ conductors of heat and electricity.
विकल्प
Good
Bad
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उत्तर
Non-polar covalent compounds are bad conductors of heat and electricity.
संबंधित प्रश्न
State the reason to explain why covalent compounds "are bad conductors of electricity".
Why is graphite used for making dry cell electrodes but diamond is not?
Draw the electron-dot structure of a hydrogen chloride molecule:
- Which inert gas does the H atom in HCl resemble in electron arrangement?
- Which inert gas does the Cl atom in HCl resemble in electron arrangement?
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. În 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?
Complete the following:
When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)
Name a neutral covalent molecule which contains one lone pair of electrons.
Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.
Explain why carbon tetrachloride does not dissolve in water.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
Write equations to show how A and B form ions.
An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
