Consider the group 1a element sodium (atomic number 11), the group 3a element aluminum (atomic number 13), and the group 7a element chlorine (atomic number 17). these elements are in period 3. how are the first ionization energies of these elements related?

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123

How does a noncompetitive inhibitor reduce an enzyme’s activity?