Arrange the following elements in order of decreasing ionization energy: Cl, Si, P, Ar *

Modern weaponry has increased the number of deaths in wars and violent conflicts.

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?