Answer:
Don't post any question if isn't related to the topic or to your homework or assignment.
Explanation:
It should be radio waves. If you need anymore help look up the wavelength chart online.
A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions. ( K, Cl)...
I think is 1 and a half km
Answer:
Carbon dioxide and hydrogen monoxide
