Question

the correct increasing order of ionic mobility of na+, mg2+ mad al3+ ions i

Answer 1

Ionic mobility is inversely proportional to size so the order would be al3+>mg2+>na+

Answer 2

The increasing order of ionic mobility of given ions are as follows:

$Al^{3+}<Mg^{2+}<Na^+$

Explanation:

• The main principle of interest in the given case is that ionic mobility is inversely proportional to the size of the ions.
• It means that, if the size is big, mobility will be less, whereas if the size is small mobility will be more.
• Accordingly, when the given elements located in the periodic table, they are found in order in which Na is followed by Mg which is then followed by Al.
• From group 1 to group 18, the atomic size of the ions decreases, Thus the arrangement will be $Na^+>Mg^{2+}>Al^{3+}$.
• As the atomic size is inversely proportional to the ionic mobility, the correct increasing order of ionic mobility of the given ions are $Al^{3+}<Mg^{2+}<Na^+$.

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