Are the bonds in each of the following substances ionic, nonpolar covalent, or polar covalent? KCl For those substances with polar covalent bonds, which has the least polar bond?

i would say b

explanation:

but i think i would need more information than that

its first and third is your answer i did the qustion the fourth isnt right

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