Which atom or ion is the largest?
A. K
B. K^+
C. Ca
D. CA^2+
E. Li

Drive down any three characteristic of modern periodic table

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Answer explain why it is not possible to deduce a complete order of reactivity.