Question

In an ionic bond, the atom with the highest electronegativity will always form what type of bond?

Answer 1

i think you mean "...what type of ion".
negative

Explanation:

to answer EXACTLY your question:
"In an ionic bond, the atom with the highest electronegativity will always form what type of bond?"

the answer is:
Ionic!

to correct what i think is your typing error, gives this new question:
"In an ionic bond, the atom with the highest electronegativity will always form what type of ion ?"

the answer to this question is:
negative.

explanation:
the most electronegative element is "greedy" for electrons, so will gain an electron (or 2 or 3) and become a negative ion (anion). whereas the least electronegative element will loose an electron (or 2 or 3) and become a positive ion (cation).