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प्रश्न
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
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उत्तर
Electronic configuration of element with atomic number 12 is:
K2 L8 M2
There will be 2 electrons in the K shell, 8 electrons in the L shell and 2 electrons in the M shell of its atom.
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संबंधित प्रश्न
If number of electrons in an atom is 8 and number of protons is also 8, then
- What is the atomic number of the atom? and
- What is the charge on the atom?
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 | - |
Multiple Choice Questions
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Atomic no. = 1
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Atomic no. = 1
Mass no. = 1
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What is mass number of an atom?
‘A’ is denoted by ______.
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