Consider an atom confined to a linear cavity of length 2.0 nm inside a molecular sieve material. From a quantum-chemical point of view, this system can be representative

of a particle in a one-dimensional box. Determine the spacing, ΔE, between energy

levels E1 and E2 (in J) for the case where trapped atom is (a) 3He and (b) 129Xe.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

i believe the answer is true.

a is the correct answer

it's c (engineer's do their work with mechanical stuff not on any living being)