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Fill in the following blanks with suita...

Fill in the following blanks with suitable words :
(a) The particle which is formed by the gain of electrons by an atom is called `"……….."`.
(b) The particle which is formed by the loss of electrons by an atom is called `"……….."`.
(c ) The particles which is formed by the loss or gain of electrons by an atom is called `"……….."`.
(d) A potassium ion has positive charge because it contains less `"……….."` than `"……….."`.
(e) A sulphide ion has negative charge because it contains less `"……….."` than `"……….."`.

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