Which rule for assigning oxidation numbers is correct? a.)Hydrogen is usually -1
b.)Oxygen is usually -2
c.)A pure group 1 element is +1
d.)A monatomic ion is 0

Answer... Option B. Oxygen is usually -2; except in Peroxides

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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