Two: lead and iodine.
There are three elements in PbI2: lead (Pb), iodine (I), and two iodine atoms bonded to the lead atom.
PbI2 has TWO(2) elements. They are ;- Pb ; Lead (Plumbum ; Latin) I ; Iodine . However, there are three (3) atoms in PbI2. Viz: - 1 x Pb(Lead) 2 x I (iodine) 1 + 2 = 3 The name of the sibstance is 'lead iodide'.
The chemical formula for lead II iodide is PbI2. It is a yellow crystalline compound with a high solubility in water.
This compound is lead iodide.
The compound formed when lead reacts with iodine is lead(II) iodide, with the chemical formula PbI2.
PBI2, or lead(II) iodide, consists of one lead (Pb) atom and two iodine (I) atoms. Therefore, there are a total of three atoms in one formula unit of PBI2.
2 elements
3
A compound forms when two or more different elements chemically bond together. Therefore, at least two elements must be present for a compound to form.
how many atoms are in this compound
Lead(II) iodide (PbI2) is typically a yellow colored solid.
Mg which stands for Magnesium is the element to begin with, not a compound.