Chemistry Chapter 5 Test
How many energy sub levels are in the second principle energy level?
2
How many unpaired electrons are in the sulfur atom (atomic number 16)?
2
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
4s
What is the maximum number of d orbitals in a principle energy level?
5
What is the number of electrons in the outermost energy level of an oxygen atom?
6
What is the maximum number of electrons in the second principle energy level?
8
What did John Dalton discover?
Atomic theory
What did James Chadwick discover?
Confirmed the existence of neutrons
What is the shape of the 3p atomic orbital?
Dumbbell
What did Niels Bohr discover?
Electrons moved in a circular orbit at fixed distance from the nucleus
The principle quantum number indicates what property of an electron?
Energy level
Which scientist developed the quantum mechanical model of the atom?
Erwin Schrodinger
What did Ernest Rutherford discover?
Nucleus and a lot of space in a atom
In Bohr's model of the atom, where are the electrons and protons located?
The electrons move around the protons, which are at the center of the atom
How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum/
The speeds are the same
When an electron moves from a lower to a higher energy level, the electron ______
absorbs a quantum of energy
if the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?
counterclockwise
What did Erwin Schrodinger discover?
developed equations that lead up to the quantum mechanical model
Emission of light from an atom occurs when an electron ___?
drops from a higher to a lower energy level
What did J.J Thompson discover?
electrons and pudding model
According to Aufbau principle, _____
electrons enter orbitals of lower energy first
Stable electrons configurations are likely to contain ___
filled energy sublevels
The quantum mechanical model of the atom ____
involves the probability of finding an electron in a certain position
How does the energy of an electron change when the electron moves closer to the nucleus?
it decreases
If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals?
one electron in each orbital
what are quanta of light called?
photons
Bohr's model could only explain the spectra of which type of atoms?
single atoms with one electron
The atomic emission spectra of a sodium atom on Earth and of a sodium atom in the sun would be ____
the same
How are the frequency and wavelength of light related?
they are inversely proportional to each other
According to the Heisenberg uncertainty principle, if the position of a moving particle is know, what other quantity CANNOT be known?
velocity