Which neutral atom has the electron configuration 1s22s22p63s23p63d74s2?

Which of the following forms of radiation has the highest frequency?

Which color (frequency) of light travels the fastest in a vacuum?

What is the energy, in J, of light that must be absorbed by a hydrogen atom to transition an electron from n = 3 to n = 6? Submit an answer to three signficant figures.

(10 points extra credit) Breifly explain the concept of wave/particle duality. How does this affect our understanding of atomic structure? For full points you need to explain the difference in waves and particles, how standing waves are used to visualize electron quantized orbitals.

What is the frequency of green light that has a wavelength of 531 nm? (c = 3.00 x 10⁸ m/s)

Factor the polynomial x2 – 12x + 20.

Find the radius of a circle whose equation is given by (x – {a})2 + (y + {b})2 = {r}.

Which of the following equations best represents the function whose graph is shown below:

Find the x-intercept(s), if any, of the function  x 2 + 3 x + 2 {“version”:”1.1″,”math”:”x^2+3x+2″}