Name That Model!
This scientist pictured the atom as a solid, indivisible sphere — like a tiny billiard ball.
Who is John Dalton?
This subatomic particle has a positive charge and lives in the nucleus.
What is a proton?
The first energy level (n = 1) can hold a maximum of this many electrons.
What is 2?
Elements in the same vertical column of the periodic table are called this.
Waht is a group (or family)?
This letter represents the spherical orbital.
What is s?
This “plum pudding” model showed electrons scattered like raisins in a positively charged soup.
What is Thomson’s model?
This is the particle used in gold-foil experiment to observe the internal structure of an atom.
What is alpha particles?
This principle says electrons fill orbitals starting from the lowest energy first.
What is the Aufbau principle?
Sodium is in Group 1. It has this many valence electrons.
What is 1?
The number of orbitals in a p-subshell.
What is 3?
This scientist’s gold foil experiment showed that atoms have a small, dense nucleus.
Who is Ernest Rutherford?
This is the dense, positively charged central part of an atom.
What is a nucleus?
Write the electron configuration of oxygen (atomic number 8).
What is 1s² 2s² 2p⁴?
As you move across a period from left to right, atomic size generally does this.
What is decrease?
This principle states that no two electrons in an atom can have the same set of four quantum
What is the Pauli exclusion principle?
This model introduced the idea of electrons orbiting the nucleus in specific energy levels, like planets around the sun.
What is the Bohr model?
This is the material used to initially determine the structure of an atom.
What is gold?
According to this rule, electrons occupy equal-energy orbitals singly before pairing up.
What is Hund’s rule?
Elements in this group are very stable and have a complete set of valence electrons.
What are the noble gases (Group 18)?
According to this principle, the 4s orbital fills before the 3d orbital.
What is the Aufbau principle?
This modern model describes electrons as existing in orbitals where their positions are given by probabilities, not fixed paths.
What is the Quantum Mechanical Model (or Schrödinger’s model)?
What is an electron?
Give the complete electron configuration for iron (atomic number 26).
What is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶?
Cobalt, Nickel, Gold, and Silver are some of the elements that can remove, transfer, or give their electrons to form cations.
What is a metal?
This rule states that electrons occupy equal-energy orbitals singly before pairing up.
What is Hund’s rule?