Question

Which of the following arbitary elements below can make +2 charged ions?



a
X
b
Z
c
A
d
Y
e
E

Answer 1

I don't have the figure or any information telling me which real elements the letters (X, Z, A, Y, E) stand for, so I can't pick which of those specific letters would form a +2 ion. Please either upload the diagram or tell me the element names or atomic numbers that correspond to A, X, Y, Z, E and I'll answer exactly.

Meanwhile, here are quick rules you can use to decide which elements commonly form +2 ions:

- Group 2 (alkaline earth metals: Be, Mg, Ca, Sr, Ba) form +2 ions reliably.
- Group 12 metals (Zn, Cd, Hg) commonly form +2 ions.
- Many transition metals form +2 ions (Fe2+, Mn2+, Co2+, Ni2+, Cu2+, etc.), but they can have multiple oxidation states.
- Some heavier post‑transition metals can form +2 (Sn2+, Pb2+).
- Main‑group metals on the far left lose electrons equal to their valence: group 1 → +1, group 2 → +2, group 13 → usually +3. Nonmetals generally do not form +2 cations.

If you tell me which element each letter represents, I’ll mark which ones can form +2 ions.