Based on location in the periodic table, which element has chemical properties that are most similar to iodine xenon (Xe)
calcium (Ca)
Selenium (Se)
fluorine (F)

Afamily is one another name for a group on the table of elements.

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)