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प्रश्न
Compare :
Sodium atom and sodium ion
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उत्तर
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Sodium atom |
Sodium-ion |
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Sodium atom is electrically neutral. |
Sodium-ion is positively charged. |
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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. |
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The sodium atom has only one electron in its valence shell. |
Sodium-ion has 8 electrons in its valence shell. |
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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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(b) A gas of valency 2.
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(d) A non-metal of valency 4
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Name the following:
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Choose the odd one out and write the reason:
