# Which of the following is considered a nonbonding atomic solid? A. Ca B. Ne C. K D. Cu E. I2

I see you figured it out. Calcium, potassium, and copper, are all metallic species, and non-molecular. On the other hand, ${I}_{2}$, is a homonuclear diatomic molecule. And this leaves neon as the only candidate. Neon is an inert, ATOMIC gas, at standard pressures and temperatures.