True or false 1. The atomic number of an element equals the number of neutrons in an atom
of that element.
2. The exact position of electrons of an atom cannot be determined.
3. The electrons closest to the nucleus of an atom have the least amount
of energy
4. The number of valence electrons in an atom tells you how many chemical
bonds that atom can form.

Abbreviated as mg-25.

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