Pls HELPPP!! It’s just a few questions

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Heat is the total potential energy of a substance that can be transferred. true false

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent