Chemistry Chapter 5 Test

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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


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