Which of the following is the highest reactive metal ?
ASodium
BPotassium
Ccalcium
DIron
Answer:
B. Potassium
Read Explanation:
Potassium is even more reactive.
Chemical reactivity in alkali metals (Group 1 elements) increases as you move down the group because the outermost electron gets farther from the positive nucleus, making it easier to lose during a reaction.
