Sodium atom and sodium ion :

are chemically the same

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have the same no. of protons

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have the same no. of electrons

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form covalent bond

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Solution

The correct option is B have the same no. of protons
Sodium atom and sodium ion are not same chemically.
Sodium loses an electron to form sodium ion so they have different no. of electrons and they do not form a covalent bond with each other but, no. of protons in the nucleus is same for both.

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Sodium atom and sodium ion :

The correct option is B have the same no. of protonsSodium atom and sodium ion are not same chemically.Sodium loses an electron to form sodium ion so they have different no. of electrons and they do not form a covalent bond with each other but, no. of protons in the nucleus is same for both.

The correct option is B have the same no. of protons
Sodium atom and sodium ion are not same chemically.
Sodium loses an electron to form sodium ion so they have different no. of electrons and they do not form a covalent bond with each other but, no. of protons in the nucleus is same for both.