The number of neutrons is the difference between the mass number and the number of protons.
You get the element by looking at the atomic number which is the number of protons. In this case, it is 9 and yes, it is F.
<span>However it is not an atom because it has 10 electrons so you have a fluoride ion F-. </span>
<span>The number of neutrons = 19 - 9 = 10
Therefore, the answer is D.
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C cuz it just doesn’t make sense
Hey You!
Metal and Minerals may have survived 85 years of weather.
Hey there!
Speed and velocity both:
1) Measure how fast something is moving
2) Both measured in miles per hour, meters/second, etc (rates)
However, there's a prime difference:
Different because:
1) Velocity is speed, but in a certain direction
2) Velocity is a vector
3) Velocity can be positive <em>or</em> negative, unlike speed.
I added another just in case you had a preference :)
Hope this helps!
Answer:nothing beats the chemistry between us :) smooth right?
Explanation:I’m pretty sure u have to show the part before the questions so that people can respond to it since there is no info on how to answer the question :p
