Please help me, I really need help

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

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Which statement can best be concluded from the ideal gas law?