3. The energy for a quantum of light is 2.84 x 10° J. What is the wavelength of this light? In which part of the electromagnetic spectrum is this light found?

What is the molecular formula of a hydrocarbon with m+ = 166? (write the formula with no subscripts, e. g. c4h10.) what is the sum of rings and double bonds in this compound?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.