Question
Atoms and Ions

Answer

Atoms Ions
$(i)$ An atom is electrically neutral. $(i)$ Ion is an atom or group of atoms which is either positively charged or negatively charged, formed due to loss or gain of electrons
$(ii)$ An atom has all the properties of the parent element. $(ii)$ An ion does not has properties of the parent element.
$(iii)$ An atom may or may not have an independent existence. $(iii)$ An ion does not has an independent existence.
$(iv)$ In an atom, the outermost orbit may be unstable. Eg. $: Na$ (Sodium), $K$ (Potassium) $Na (2, 8, 1), K (2, 8, 8, 1)$ $(iv)$ In an ion, the outermost orbit is stable. Eg.$: Na^+$ (sodium ion), $K^+$ (potassium ion) $Na^+ (2, 8), K^+ (2, 8, 8)$

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