The answer is:
noble gases will not form compounds.
The explanation:
-The noble gas family, all of the elements in Group Zero.
-The list of noble gases include helium(He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
- these elements don't like to react, we don't use them because of they have 8 valence electrons already and don't like to lose or gain electrons so, they will not form compounds.
20000 ft/s or 6100 m/s
b. white objects
c. black objects
d. purple object