1. the side-by-side overlap of p orbitals produces what kind of bond?

A pi (π) bond.

Explanation:

p orbitals are spheric, thus, they have only one way to overlap and they can only form sigma bonds. However, p orbitals (lobed shape) can overlap in two ways:

If two p orbitals overlap end-to-end, they form a sigma bond.If two p orbitals overlap side-by-side, they form a pi bond.

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

Compound with sulfer  is bright red