Answer:
It's (6.02214179×1023) / one mole of substance.
Evaporating? But that’s with a boiling liquid
Answer is: <span>all of them are hard and dense metals.
Beryllium, magnesium,calcium and strontium are a</span>lkaline earth metals. The elements have very similar properties. Alkaline earth metals<span> have in common an outer s- </span>electron shell (two electrons). Strontium has greatest density of this four elements.
Why does the volcano cause an explosion?