Which of the following is the best explanation for a covalent bond?

a. electrons simultaneously attracted by more than one nucleus
b. the overlapping of two electron-filled orbitals having different energies
c. the overlapping of unoccupied orbitals of two or more atoms
d. a positive ion attracting negative ions
e. an interaction between outer electrons

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

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 liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)