Which of the following elements has the lowest ionization energy? A)

Argon

B)

Hydrogen

C)

Beryllium

D)

Helium

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.