Which of the following electromagnetic waves has wavelengths slightly longer than the human eye can see?

X-rays
ultraviolet waves
infrared waves
gamma rays

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Type the letter that represents the correct location for each particle type below.

One does not belong why? ice, gold ,wood ,diamond and table salt