Quel sont les 3 mouvement

Name the element in group 17, period 2. (periodic table)

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.