Write the symbols for the ions that form when potassium and iodine react to form the ionic compound potassium
iodide. for middle school

A sodium atom transfers an electron to a chlorine atom to form a sodium ion and a chloride ion. The product is the ionic compound, sodium chloride. In the same way, a potassium atom transfers an electron to an iodine atom to form a potassium ion and an iodide ion. So, potassium iodide is an ionic compound.

Explanation:

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation:

i think it's c. i'm not sure but i think so.