Question
The set representing the correct order of ionic radius is
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Answer
b
The set representing the correct order of ionic radius is $N a^{+}>L i^{+}>M g^{2+}>A l^{3+}>B e^{2+}$.
The set representing the correct order of ionic radius is $N a^{+}>L i^{+}>M g^{2+}>A l^{3+}>B e^{2+}$.
In a period, on moving from left to right, the ionic radius decreases. Hence, $N a^{+}>M g^{2+}>A l^{3+}$ and $L i^{+}>B e^{2+}$
In a group, on moving down from top to bottom, the ionic radius increases. Hence, $N a^{+}>L i^{+}$ and $M g^{2+}>B e^{2+}$
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