The standard reduction potentials at $25^{0}$ C of $L i^{+}$ /Li , $B a^{2 +}$ /Ba , $N a^{+}$ /Na and $M g^{2 +}$ /Mg are -3.05 , -2.73 , -2.71 and -2.37 volt respectively. Which one of the following is the strongest oxidizing agent?

The first ionistation enthalpies of Na, Mg, Al, and Si are in the order
(a) Na< Mg > Al < Si (b) Na> Mg > Al > Si
(c) Na< Mg< Al< Si (d) Na> Mg> Al < Si

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Which of the following pairs shows diagonal relationship?

The correct option is D Li and MgA diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table. Thus, Li and Mg are diagonally related.

The correct option is D $L i$ and $M g$
A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table. Thus, $L i$ and $M g$ are diagonally related.