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प्रश्न
Complete the table give below.
| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | ||
| Boron | 5 | 1s22s22p1 | ||
| Oxygen | 8 | 1s22s22p4 |
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उत्तर
| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | 1 |  |
| Boron | 5 | 1s22s22p1 | 3 |  |
| Oxygen | 8 | 1s22s22p4 | 6 |  |
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संबंधित प्रश्न
Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
Match the column A with Column B.
|
Column A |
Column B |
|
(i) Sodium chloride (ii) Ammonium ion (iii) Carbon tetrachloride |
Covalent bond Ionic bond Covalent and coordinate bond |
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
State one observation which shows that atom is not indivisible.
Name the following:
Metal with valency 2
Give a reason
Physical properties of isotopes are different.
Give reason
Argon does not react.
How do atoms attain noble gas configurations?
The element that would form anion by gaining electrons in a chemical reaction is ______.
How many electrons are required or released by each atom in chlorine to attain the nearest noble gas configuration?
