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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 statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Sodium chloride is ______ compound while hydrogen chloride is ______ compound.
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reducing agent.
State the type of bonding in the following molecules.
Water,
Explain the following:
Carbon-12 and carbon-14 both show similar chemical properties.
Explain Octet rule with an example.
______ is the only noble gas that does not have eight electrons in its valence shell.
How many atoms of each kind are present in the following molecule:
carbon tetrachloride
