Atomic History
A Greek philosopher who first proposed a concept of "atomos", or an indivisible particle.
Who is Democritus?
The amount of energy required to move an electron from one energy level to the next.
What is a quantum?
What is ground state?
The mass of an electron.
What is negligible, or zero, or 1/1840 amu.
The number of orbitals possible in the d orbital.
What is 5 orbitals?
This scientist used the cathode ray experiment to discover this.
The tiny central core of an atom composed of protons and neutrons.
What is the nucleus?
The _____ of each element is like a person's fingerprint. No two elements have the same one.
What is atomic emission spectrum?
The number in the isotope platinum-194 represents this.
What is the mass number?
State the electron configuration for the element Titanium (Ti).
What is 1s22s22p63s23p64s23d2?
The first contributor to the current atomic model who was able to use experimental methods to develop a scientific theory.
Who is John Dalton?
Atoms that have the same number of protons but different numbers of neutrons.
What is an isotope?
According to this principle, electrons in an orbital must have opposite spins.
What is the Pauli Exclusion Principle?
The number of neutrons in carbon-13.
What is 7 neutrons?
The electromagnetic spectrum in increasing wavelength for the following waves: radio waves, gamma rays, visible light, ultraviolet.
What is gamma rays, ultraviolet, visible light, and radio waves?
This scientist used the gold foil experiment to discover this.
Who is Ernest Rutherford and the discovery of a dense central nucleus in the atom?
A mathematical expression, provided by the Schrodinger equation, that describes the probability of finding an electron at various locations around the nucleus.
What is an atomic orbital?
This principle states that it is impossible to know both the velocity and the position of a particle at the same time.
The atomic number of an element represents this.
What is the number of protons?
This happens to frequency as wavelength increases.
What is decrease?
This scientist ushered in the theory of quantum mechanics when studying the hydrogen atom and suggested this type of atomic model.
Who is Niels Bohr and the planetary model.
When light shines on a metal, electrons are ejected due to this.
What is the photoelectric effect?
The maximum number of orbitals in the p sublevel.
What is 3?
The weighted average mass of the atoms in a naturally occurring sample of the element.
What is atomic mass?
Planck's constant.
What is 6.626x10-34 J•s?