A certain FM radio station broadcasts electromagnetic waves at a frequency of 9.05 x 107 Hz. These radio waves travel at a speed of 3.00 x 108 m/s. What is the wavelength of these radio waves? (Hint: Take out of scientific notation first ☺)

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

gas

explanation:

smoke is the matter of a gas

the answer is c

tell me if wrong

the answer is symmetrical : )