Explain why an atom with 7 valence electrons and 2 energy levels has a high electronegativity and ionization energy.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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.)

Which characteristics affect ocean water’s temperature? check all that apply. depth location mass salinity waves