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प्रश्न
How many atoms of each kind are present in the following molecule:
water
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उत्तर
Water (H2O) has two atoms of hydrogen and one atom of oxygen. The oxygen atom has six valence electrons. So it requires two electrons to form an octet structure.
संबंधित प्रश्न
How do atoms attain noble gas configuration?
Complete the following:
| Sodium | Phosphorus | Carbon | |
| Formula of chloride | |||
| Nature of bonding | |||
| Physical state of chloride |
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What is the formula of the compound formed between X and Z.
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2, 8, 1 |
2, 8, 7 |
2, 5 |
1 |
Answer the following question based on the table above:
What is the formula of the compound formed between W and X.
Why do they exist as monoatoms in molecules?
Choose the correct option
Which of the following is the correct electronic configuration of potassium?
Draw the electron distribution diagram for the formation of Carbon di oxide (CO2 ) molecule.
______ is the only noble gas that does not have eight electrons in its valence shell.
Write the basic concept of Kossel – Lewis theory.
Complete the following table:
| Atoms | Atomic number | Electron distribution | |
| 1. | O | 8 | ______ |
| 2. | N | ______ | ______ |
| 3. | ______ | 17 | ______ |
| 4. | ______ | ______ | 2,8,2 |
