Type in the correct values to correctly represent the valence electron configuration of magnesium: asb a = b =

The correct answer would be,
A= 3 
B=2

Answer : The correct answer will be A =3 and B =2 as the electron configuration of Mg will be as where A is 3 and B is 2.Explanation :

Magnesium has atomic number as 12. The complete electron configuration will be as .

which can be abbreviated as as the electron configuration resembles to that of neon element.

In the outermost shell the electron in 3 s orbital is only 2. So, therefore 3 is the orbital of S and there are 2 electrons in it.

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