The size of Be^{2+} and Al^{3+} is not so clo | vedclass

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Question

(C) The diagonal relationship between elements like $Be$ and $Al$ is primarily determined by their ionic potential or charge density. Charge density i

Vedclass · Accepted Answer

Similar charge per unit area

Vedclass · Answer

(C) The diagonal relationship between elements like $Be$ and $Al$ is primarily determined by their ionic potential or charge density. Charge density is defined as the ratio of ionic charge to ionic volume,which is often approximated as the charge per unit area (ionic charge / ionic radius squared). Since $Be^{2+}$ and $Al^{3+}$ have similar charge-to-size ratios (ionic potential),they exhibit similar chemical properties. Therefore,$C$ is the correct answer.

The size of $Be^{2+}$ and $Al^{3+}$ is not so close,but they show a diagonal relationship due to:

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