Question

$A{l}^{3+}$ has low ionic radius than $M{g}^{2+}$ because

• A. $A{l}^{3+}$ has high nuclear charge than $M{g}^{2+}$
• B. Mg atom has less no. of neutrons than Al atom
• C. Mg and Al differ in electronegativity values
• D. Al atom has low ${\mathrm{IE}}_{}$ value than Mg atom

Answer 1

Answer: (A)

Atomic radius is inversely proportional to nuclear attraction. $A{l}^{3+}$ has low ionic radius than $M{g}^{2+}$ therefore $A{l}^{3+}$ has low ionic radius than $M{g}^{2+}$