The diameter of Mercury is 4,878,000 meters.
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How does the motion of particles in a gas change as the gas cools

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

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