Answer:
C: Carbon
Explanation:
Hydrogen, oxygen, and carbon are the most important elements in organic compounds.
Answer: Proton will have larger wavelength
Explanation:
(de-Broglie's equation)

h= Planck constant
m= mass of the particle
v= velocity of the particle
As we can see from the de-Broglie's equation , that wavelength is inversely proportional to the product of mass into velocity of the object.
The wavelength of proton will be higher than that fast moving golf ball because mass of proton
is very small than that of the golf ball (45.93 g). Proton is moving at slow velocity and the golf ball is moving with fast velocity by which value of product of mass into velocity of proton will be lower than the value of product of mass into velocity of the golf ball which will result in larger value of wavelength of the proton.
An object on the moon is 1/6 of the weight of an object on Earth
To find the answer to your question, divide the number of N on Earth by 6, 6N / 6 = 1N
Hope this helps!