How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C?
O 1.5
O2
224
O 32

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