what’s the pattern here to find out what A, B, C, and D equals? i have to find the numbers so i can turn it into a code.

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion