How do the hydrogen-1 and hydrogen-2 isotopes differ? A. Hydrogen-2 has one neutron and hydrogen-1 has no neutrons

B. Hydrogen-2 has two protons and hydrogen-1 has one proton

C. Hydrogen-2 has one more electron than hydrogen-1

D. Hydrogen-2 has 2 neutrons and hydrogen-1 has one neutron

The correct answer is c

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

The formula is (nh4)2co3

A.(nh4)(2co3)is the correct answer