D. A salt e.g NaCl is held by ionic bond
The answer is c because fusion is way more dangerous and complicated and extremely hard to do, so they rely on fission, the splitting of atoms
Answer:
Be
Explanation:
Reactivity increases from left to right and decreases from the top of the column to the bottom of column
The location where the mercury level of the barometer would be the lowest is at the very high altitudes of the Earth's atmosphere (about 100 km), since air pressure decreases as altitude increases.