Different forms of this element are often used in a type of radiometric datingthat determines the ages of objects up to about 40,000 years. o a) argonob) carbono c) uraniumod) potassium

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Ithink carbon dioxide, i am not completely sure.tell me if i am wrong.