Question

Which of the following are likely to form an ionic bond?

copper atoms
hydrogen atoms
hydrogen and oxygen atoms
copper and fluorine atoms

Answer 1

Answer: Hydrogen and oxygen atoms, hope I helped! :P

Answer 2

ionic bond is formed by metals and non metals so copper reacts with fluorine by donating 2 electrons to two fluorine atoms so as to gain an octet structure.
Cu + Fl₂→ CuFl₂
Cu²⁺ + Fl⁻→ CuFl₂
copper atoms have metallic bonds so also hydrogen atoms. while hydrogen and oxygen atoms have covalent bonds.