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प्रश्न
Compare :
Sodium atom and sodium ion
उत्तर
|
Sodium atom |
Sodium-ion |
|
Sodium atom is electrically neutral. |
Sodium-ion is positively charged. |
|
In sodium atom, there are 11 protons and 11 electrons, i.e. an equal number of protons and electrons. |
In sodium-ion, there are 11 protons but 10 electrons, i.e. sodium ion contains a lesser number of electrons. |
|
The sodium atom has only one electron in its valence shell. |
Sodium-ion has 8 electrons in its valence shell. |
|
The size of a sodium atom is larger than a sodium ion. |
The size of a sodium ion is smaller than a sodium atom. |
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| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | ||
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