If an atom gains an electron, it is called _____.

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Solution

If an atom gains an electron, it is called $a n i o n - ----- -$ .

For example: Chlorine atom gains electron to become chlorine anion.
$C l + e^{-} \to C l^{-}$

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If an atom gains an electron, it is called _____.

If an atom gains an electron, it is called anion–––––––.For example: Chlorine atom gains electron to become chlorine anion. Cl+e−→Cl−

If an atom gains an electron, it is called $a n i o n - ----- -$ .

For example: Chlorine atom gains electron to become chlorine anion.
$C l + e^{-} \to C l^{-}$