What is the correct electron configuration for a chlorine atom? A 152 252 2p 3s
B 1s 2s 2p 3s 3p6
1s? 252 352 3p5
D1s 2s 2p 3s 3p5

What do you mean by that? like the contents? the thc level?

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