Answer:
sodium
Explanation:
everybody already known its sodium
Both are oxidation reactions. Burning is just a lot faster than rusting.
So for D you have to find energy right
from c you get wavelength Lambda
so on D use this
E = Hc / lambda
c is given 1.5 x 10 ^20
h = 6.624 x 10^-34
and then you get answer for energy
