A spectrum is: A. positively charged particles in a nucleus
B. the range of wavelengths emitted or absorbed by an object
C. electromagnetic energy emitted by an atom

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

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

What are the first three quantum numbers for the electrons located in subshell 2s?