1. The atomic radius for the element neon is 7.0 x10^1 pm. The area of the head of an average flat-headed straight pin is 3.50 x 10 ^-4 in^2. Determine the number of neon atom scan fit across the diameter of the head of a straight pin if you could line up a row of atoms?
2. Calculate the Anion in NaBr and KNO3? Describe an easy way to tell?