A force of attraction between the opposite of charges of the ions in an lonic compound is called what?

Ionic bonds

Explanation:

The force of attraction between the opposite charges of the ions in an ionic compound is called an ionic bond.

An ionic bond results from the electrostatic force of attraction between oppositely charged ions.

This attraction creates an ionic or electrovalent bond.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer