Answer:
Red, orange, yellow, green, blue, indigo, and violet.
Explanation:
These are the colors that light takes on when split using a prism. These are the same colors that are in a rainbow. You can remeber these colors using this acronym:
R.O.Y G. B.I.V
It's kinda like a name!
Be, Mg, Ca increasing first ionization energy
Answer:
Which of the elements below will form an anion?
CI (Chlorine)
Explanation: Chlorine generally behaves as an anion having an oxidation state -1
The correct answer I believe is sunlight
solution:
You need to find the frequency, and they have already given you the wavelength. And since you already know the speed of light, you can use formula (2) to answer this problem. Remember to convert the nano meters to meters because the speed of light is in meters. 
