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प्रश्न
What is meant by the term chemical bonding?
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उत्तर
It is the complete multi-step process or mechanism of redistribution of valence electrons through which combining atoms attain a stable, nearest noble gas electronic arrangement.
संबंधित प्रश्न
Identify the term/substance in the following:
The electrons present in the outermost shell of an atom.
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) |
Why do atoms combine?
Fill in the blanks
A coordinate bond is represented by an arrow pointing from ________ to__________ atom.
What is a lone pair of electrons?
Draw an electron dot diagram of a hydronium ion and label the lone pair of electrons.
What is the term defined below?
A bond formed by a shared pair of electrons with both electrons coming from the same atom.
By drawing an electron dot diagram, show the lone pair effect leading to the formation of the ammonium ion from ammonia gas and hydrogen ion.
What are the term defined below?
A bond formed by a shared pair of electrons with both electrons coming from the same atom.
