Based on information from the periodic table, which statement is true for the element cobalt?
27
Co
58.9
A. A cobalt atom contains 27 protons, and most cobalt atoms
contain 32 neutrons.
B. A cobalt atom contains 27 protons, and neutral cobalt atoms
contain 32 electrons.
C. The atomic number of cobalt is 27, and its average atomic mass is
32
D. The average atomic number of cobalt is 58.9, and its atomic mass
is 27.

Ascientist is working with a new kind of quantum dot to make a dye. he is applying newton’s laws to the particle, but it seems to be breaking these laws of physics. which action will most likely the scientist study the particle’s motion? a. he needs to remember that the particle is too large for quantum analysis. b. he must continue to use newtonian mechanics, but he needs to learn more about the particle. c. he needs to use quantum mechanics, not newtonian mechanics, because this is a nanotechnology product. d. he must determine new physical laws that only apply to quantum dots.