State true or false.

Sodium is more metallic than aluminium.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- The term "metallic character" refers to a metal's amount of reactivity. A metal's propensity to lose electrons determines its metallic properties. The ionisation energy is the minimum amount of energy needed to free an atom's weakly bound electron. As ionisation energy diminishes, metallic character increases.
The ionisation energy rises as we move from left to right along the period. This is because the newly added electrons are not well insulated, which causes the effective nuclear charge to rise and the ionisation energy to rise.
The tendency to lose electrons determines metallic character.
Aluminium is located adjacent to the metalloids, on the right side of the Periodic Table, while sodium is assigned to the group of alkali metals. Because metallic quality decreases from left to right in the Periodic Table, sodium is more metallic than aluminium.
Hence, the correct answer is option 1.

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