Transition metals
Most transition metals differ from the metals of Groups 1, 2, and 13 in that they are capable of forming more than one cation with different ionic charges. As an example, iron commonly forms two different ions
The answer is an ENDOTHERMIC REACTION.
HOPE THIS HELPS!!!!!
Answer:
copper has 2+ ions in a sample of copper
Yeah it uses some valuable scientific vocabulary and background knowledge, I hope this hypothesis will be good enough for your teacher (don't worry it will be)
Says here the answer is <span>dipole-dipole</span>
