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प्रश्न
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
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उत्तर
Structure of atoms:
Z is Atomic Number and A is the mass number
Silicon \[\ce{^28_14Si}\]
Z = 14 = p = e
K L M
e = 14 = 2, 8, 4
A = p + n
28 = 14 + n
∴ n = 28 − 14 = 14
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संबंधित प्रश्न
Complete the following table.
| Atomic number | Mass number | Number of Neutrons | Number of protons | Number of electrons | Name of the Atomic species |
| 9 | - | 10 | - | - | - |
| 16 | 32 | - | - | - | Sulphur |
| - | 24 | - | 12 | - | - |
| - | 2 | - | 1 | - | - |
| - | 1 | 0 | 1 | 0 | - |
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An atom on the whole has a positive charge.
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Match the atomic numbers 4,8,10,15 and 19 with each of the following:
An element which does not form ion
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- Its electronic configuration.
- The number of valence electrons it possesses.
Match the following:
| Column A | Column B | ||
| 1. | K shell | a. | 8 |
| 2. | L shell | b. | 32 |
| 3. | M shell | c. | 2 |
| 4. | N shell | d. | 18 |
Element ‘P' has electronic configuration 2,8,8,1. The number of chlorine atoms present in the chloride of ‘P’ is ______.
