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प्रश्न
Give reason
Argon does not react.
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उत्तर
Argon does not react as it has the outermost orbit complete, i.e. 8 electrons in the outermost shell.
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संबंधित प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
- State which one is:
- a non-metal
- a metal,
- chemically inert?
-
Write down the formula of the compound formed by two of the above elements.
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
What is an α (alpha) particle?
Explain
Octet rule for the formation of sodium chloride
An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to continue with chlorine and sulfur separately.
Identify the following reaction as either oxidation or reduction:
O + 2e- → O2-
Match the following:
| 1. | Monoatomic gaseous atom | a. | Electrovalent bond |
| 2. | Octet rule | b. | Benzene |
| 3. | Ionic bond | c. | Water |
| 4. | Non-polar solvent | d. | Electronic theory of valence |
| 5. | Polar solvent | e. | Noble gases |
Match the following:
| 1. | Atomic bond | a. | Oxygen and hydrogen |
| 2. | Atoms with different electronegativities | b. | acceptor bond |
| 3. | An atom that accepts electron pair | c. | covalent bond |
| 4. | Rusting of iron | d. | donor atom |
| 5. | An atom that provides electron pair | e. | oxidation |
| f. | ionic bond |
Write the basic concept of Kossel – Lewis theory.
How many atoms of each kind are present in the following molecule:
Chlorine
