They have a negative oxidation number because nonmetals gain electrons, thus making them negatively charged ions (anions). Metals become cations and have a positive charge because they lose electrons.
Which of the following is the Sl unit used in measuring the temperature of a hot cup of coffee ?
Answer: Kevin
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Answer with Explanation:
We are given that
Charge on alpha particle=q=2 e=
1 e=
Mass of alpha particle=m=
Potential difference,V=
Magnetic field,B=3.49 T
a.Speed of alpha particle=v=
By using the formula


b.Magnetic force,F
F=
c.Radius of circular path, r=

r=0.084 m
Answer:
I think it is 5.6. This is my answer