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प्रश्न
State one major difference between covalent and ionic bonds and give one example each of covalent and ionic compounds.
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उत्तर
Covalent compounds have usually low melting points and boiling points. But ionic compounds have high melting points and boiling points.
An example for a covalent compound is methane (CH4).
An example for an ionic compound is sodium chloride (NaCl).
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संबंधित प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description.
A covalent oxide of a metalloid.
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C)
What type of bonds are present in Cl2 molecule? Draw their electron-dot structures.
Fill in the blanks in the following sentence:
In forming oxygen molecule, .............. electrons are shared by each atom of oxygen.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
Draw the electron-dot structure of CO2 compound and state the type of bonding.
One of the following is not an allotrope of carbon. This is:
(a) diamond
(b) graphite
(c) cumene
(d) buckministerfullerene
For each compound mentioned above give the formulae of ions formed in aqueous solution.
State the type of bonding in the following molecule.
Ammonium ion
Complete the following:
In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)
Draw all possible structural formulae of compound from their molecular formula given below.
C3H8
Write answer as directed.
What causes the existance of very large number of carbon compound ?
The covalent bond in which the electrons are shared equally between the combining atoms.
Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
Draw an electron dot diagram to show the formation of the following compound.
Methane
Explain the following:
Water is a polar covalent molecule.
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.
______ is an example of a covalent compound having a high melting point.
