Answer Happy

Multiple Choice Identify the choice that best completes the statement or answers the question. 5. Bohr's model of the atom can be termed a "quantum" model of the atom because A. electrons and protons are equal B. it is based on the solar system C. the nucleus is positive D. each electron can possess only specific amounts of energy E. the potential energy of electrons is measurable 6. Which of the following is always true of all electrons in the same principal energy level. A. they possess the same energy D. they have same spins B. they have opposite spins E. none of the above C. they are in identical orbitals 7. Which of the following are properties of alkali metals? 1. They have one valence electron II. They have high first ionization energies. III. They are very reactive. IV Their most easily removed electron is in an s orbital A. I and II only D. III only B. I and IV only E. 1only C. I, III and IV only