1. Which elements atomic radius changes the most in size when it becomes ionized

1. Which elements atomic radius changes the most in size when it becomes ionized?A. LithiumB. ChlorineC. FluorineD. Sodium2. Which of the following are not grouped according to similar chemical properties?A. Cobalt iron nickelB. Gold silver copperC. Iron copper rutheniumD. Ruthenium iridium palladium3. What is the electro negativity difference for a bond between potassium and iodine?A. 4.6B. 1.7C. 3.3D. 0.44. Due to shape and polarity differences the boiling point of carbon dioxide dioxide is _______ water.A. lower thanB. equal toC. much higher thanD. slightly higher than