What does the position of an element in the periodic table tell you?

Compare these two waves : a. the blue wave has a higher pitch, but the orange wave is louder. b.the blue and orange waves have the same volume, but the blue wave has a higher pitch. c.the blue and orange waves have the same pitch, but the blue wave is louder. d.the orange wave has a higher pitch, but the blue wave is louder.

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

Can someone me with 3 and 4 plz. this is for masteries test.