1 point 14. Which pair of elements is most likely to form an ionic compound with
each other? *
Barium, Chlorine
Calcium, Sodium
Oxygen, Fluorine
Sulfur, Carbon
15. What is the name of the compound BaF2? *
1 point

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

Answer(28.02g/mol);