السؤال 73

Lithium, sodium, and potassium are compared under similar conditions. Which statement follows the general group 1 reactivity pattern?

Potassium is generally more reactive than sodium.الإجابة الصحيحة
Lithium is generally more reactive than potassium.
All three have identical reactivity.
Reactivity generally falls down group 1.

الشرح

Group 1 metals generally become more reactive as position moves downward, so potassium is expected to react more vigorously than sodium, and sodium more than lithium. Reversing that order applies the trend in the wrong direction.

الشرح

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