Advertisements
Advertisements
प्रश्न
What is meant by the term chemical bond and chemical bonding?
उत्तर
Chemical bond: A chemical bond may be defined as the linkage that stands for the force which actually holds the atoms together within the molecule.
Chemical bonding: The phenomenon during which a chemical bond is formed is called chemical bonding.
APPEARS IN
संबंधित प्रश्न
Choose the most appropriate answer of the following:
Bonding in this molecule can be understood to involve coordinate bonding
(A) Carbon tetrachloride
(B) Hydrogen
(C) Hydrogen chloride
(D) Ammonium chloride
Identify the anion present in the following compounds:
A salt M on treatment with concentrated sulphuric acid produces a gas which fumes in moist air and gives dense fumes with ammonia
The following table shows the test a student performed on four different aqueous solutions which are X, Y, Z and W. Based on the observations provided, identify the cation present:
| Chemical test | Observation | Conclusion |
| To solution X, ammonium hydroxide is added in minimum quantity first and then in excess |
A dirty white precipitate is formed which dissolves in excess to form a clear solution |
(1) |
| To solution Y ammonium hydroxide is added in the minimum quantity first and then in excess |
A pale blue precipitate is formed which dissolves in excess to form a clear inky blue solution. |
(2) |
| To solution W a small quantity of sodium hydroxide solution is added and then in excess. |
A white precipitate is formed which remains insoluble. |
(3) |
| To a salt Z calcium hydroxide the solution is added and then heated. |
A pungent smelling gas turning moist red litmus paper blue is obtained. |
(4) |
Choose the correct answer from the options given below:
A compound X consists of only molecules. Hence, X will have
A. A crystalline hard structure
B. A low melting point and low boiling point
C. An ionic bond
D. A strong force of attraction between its molecules
Give two example in the following case:
Co-ordinate bond compounds
Fill in the blank
Coordinate bond is also called __________bond.
Fill in the blanks
A coordinate bond is represented by an arrow pointing from ________ to__________ atom.
By drawing an electron dot diagram, show the lone pair effect leading to the formation of ammonium ion from ammonia gas and hydrogen ion.
Give suitable chemical terms for the bond formed by a shared pair of electrons with both electrons coming from the same atom.
Identify the following:
A bond formed between two atoms by sharing of a pair of electrons, with both electrons being provided by the same atom.
