Answer:
D. Vibrating around fixed positions
Explanation:
It's right on edge
Na22 and Na24 are isotopes
C( n)H(2n) is the general formula, eg: Cyclohexane is C6H12
<span>The alkali metals and hydrogen are reactive because they have only one electron to give in order to complete their valence shell. It is easier to give that one electron so when given the opportunity they will. This means they will react with anything polar or willing to take an electron.</span>
You would do M divided by V= D and the answer is 0.0284
