The atomic radius of an atom increases with the addition of electrons to a new shell. Based on their positions in the periodic table, which of the following lists is correctly ordered
from the atom with the smallest atomic radius to the atom with the largest atomic radius?
a. N, O, F
b. Ca, Sr, Ba
C. P, S, CI
d. Rb, Na, K

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

Which element is the least metallic between cadmium, silver, zinc, or iron?

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves