Oxygen almost always has an oxidation number of -2
The only exception is in H2O2 which makes it -1, and in OF2 which makes it +2
I believe the correct answer is C. The number of neutrons in the <span>253/100 Fm would be 153. The numbers beside Fm are used to determine this. Two hundred fifty three represents the mass number which is the sum of protons and neutrons in the nuclide while 100 represents the atomic number which is the number of protons. Therefore,
253 = neutrons + 100
neutrons = 153</span>
Answer:
The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.
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I hope it helps plz let me know if it is right or wrong.</h2>
Answer:
It really depends on the situation. If you have 1000 elk and 2 wolves, they really would play a better role in killing off elk so that the elk population doesn't get over populated and diseased, causing a major population collapse. But if there were only 10 elk and 50 wolves, the wolves would play a very negative role on the population.
Hope this helps!
Explanation:
Greenhouse gases are the gases in the atmosphere that keep the air in the atmosphere. It traps the sun's sunlight. Since the heat is trapped in here, it would contribute to higher temperatures.
