Question

Calcium and Magnesium are arranged in Group 2. Which one is more reactive and why?

Answer 1

magnesium..........................

Answer 2

Calcium is more reaxtive than magnesium.

Calcium's atomic number is 20 . So it's electronic configuration is 2,8,8,2.

Whereas magnesium's atoimic number is 12. So it's electronic configuration is 2,8,2.

So the electrons of calcium are distributed between 4 shells and electrons of magnesium are distributed between 3 shells.

So since calcium has more shells so it is more reactive because it is easy for it to lose and gain electrons.

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