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प्रश्न
How do atoms attain noble gas configuration?
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उत्तर
Atoms lose, gain or share electrons to attain noble gas configuration.
संबंधित प्रश्न
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
Complete the following:
| Sodium | Phosphorus | Carbon | |
| Formula of chloride | |||
| Nature of bonding | |||
| Physical state of chloride |
State differences between the properties of ionic compounds and covalent compounds.
How many atoms of each kind are present in the following molecule:
Calcium oxide
Choose the correct option
Which of the following is the correct electronic configuration of potassium?
Write the formula of its (X)
sulphate
nitrate
phosphate
carbonate
hydroxide.
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
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 |
What is a chemical bond?
