Is titanium or magnesium higher in the reactivity series?Explain your answer

MAGNESIUM IS HIGHER IN THE REACTIVITY SERIES.

Explanation:

The reactivity series of metals, also known as the activity series, refers to the arrangement of metals in the descending order of their reactivities.

The reactivity series provides information whether a metal can displace another in a single displacement reaction. It can also be used to obtain information on the reactivity of metals towards water and acids.

Magnesium reacts very slowly with cold water, but rapidly  in boiling water, and very vigorously with acids.

Titanium reacts with concentrated mineral acids, pyrometallurgical extraction using magnesium,  or less commonly other alkali metals, hydrogen or calcium in the Kroll process .

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).