The two jovian planets that contain the highest proportions of hydrogen compounds are
a) jupiter and neptune
b) saturn and uranus
c) jupiter and saturn
d) jupiter and uranus
e) uranus and neptune
f) saturn and neptune

Uranus and Neptune

Explanation:

One reason why Jupiter has a high proportion of hydrogen compounds is because it clouds is made up of hydrogen sulphide while Neptune contain the highest proportions of hydrogen compounds among all planet because it atmosphere is predominately made of hydrogen with some methane.

explanation: in any substance/object, the particles inside it (atoms/molecules) constantly move in random directions and with random speeds (this motion is called brownian motion). as a result, the particles have some kinetic energy (which is proportional to the temperature of the substance).

explanation:

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