The frequency of a wave can be calculated by dividing the speed of a wave by its wavelength. Calculate the frequency of a radio wave having a speed of 300,000,000 m/s and a wavelength of 0.00056 m.

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Explanation:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

if you're asking what comes out, it's steam.