Neodymium is a rare earth element.
The concept of quantum numbers was developed to explain the behavior of:
What is the first element on the periodic table?
Which functional group is present in a ketone?
Which subatomic particle is responsible for the majority of an atom's mass?
What is the charge of an electron?
What is the IUPAC name for CH₃CH₂CH₂NHCH₃?
Who developed the concept of quantum numbers?
What is the balanced chemical equation for the reaction between sulfuric acid (H₂SO₄) and sodium hydroxide (NaOH)?
Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹?
What is the term for the time required for half of a radioactive substance to decay?