atomic radius atomic radius 25 5:40 15 25 2 0.5 65 0 P S CI Ar K Ca 1.23 group1(A) symbol Li Na K Rb Cs 0.8 0.77 321 0.7 066 0.64 atomic radius vs atomic number chegg.com 14 15 16 17 18 19 20 0.4 ESP E36 10 atomic number period number in 2 3 4 5 6 1.25 atomic radius vs atomic number LP4 atomic number 11 1.04 0.99 0. 15 178 20 Meme 1.04 0.99 0.98 2.3 1.74 the radius of the atoms() 1.23 1.57 2.03 2.16 2.35