Question

The most reactive elements is
a) Be
b) Ba
c) Sr
c) Mg

Answer 1

According to the reactivity series....... Magnesium is more reactive of all the given elements

Answer 2

Dear Nasreen,

◆ Answer - (a) Be

The most reactive elements is *Be*.

◆ Explaination -

Reactivity of elements varies as -

- Reactivity decreases down the group.

- Reactivity increases across the period.

Hence, group 2 elements can be arranged in descending order of their reactivity as follows -

Be > Mg > Ca > Sr > Ba > Ra

Therefore, most reactive element from the options is Beryllium (Be).

Hope this helped. Thanks for the question..