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Multiple Choice

The wave-mechanical model of the atom describes the location of electrons

• (1) as loosely packed in the nucleus of an atom

• (2) as densely packed in the nucleus of an atom

• (3) in circular paths around the nucleus

• (4) in orbitals outside the nucleus

Multiple Choice

Which conclusion was developed as a result of the gold foil experiment?

• (1) Atoms are mostly empty space

• (2) All atoms are hard, indivisible spheres.

• (3) Atoms have different volumes.

• (4) All atoms have the same volume.

Energy levels are areas around the nucleus in which electrons move according to their energies.

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​Energy Levels inside the Atom

​The Electron Cofiguration

​The Electron Cofiguration shows the number of energy levels

Multiple Choice

How many energy levels are in a Hydrogen, H atom?

• 3

• 1

• 2

• 4

​Answer =1

​How many energy levels are in a Hydrogen Atom?

Multiple Choice

How many energy levels are in a Nitrogen, N atom?

• 2

• 1

• 3

• 4

How many energy levels re in a Nitrogen Atom?

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Answer = 2

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Multiple Choice

How many energy levels are in an Argon, Ar atom?

• 2

• 4

• 1

• 3

Answer 3

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How many energy levels re in an Argon Atom?

Multiple Choice

How many energy levels are in a Germainium. Ge atom?

• 2

• 4

• 1

• 3

Answer = 4

How many energy levels re in a Germainium Atom?

Energy increases with each energy level.

Electrons closest to the nucleus have less energy.

Electrons further away from the nuclus have more energy

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The amount of Energy at each level

A. First shell
B. Second Shell
C. Third Shell
D. Fourth Shell

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In the ground state, which shell of a Sodium, Na atom has an electron with the greatest amount of energy?

New York State Regents Questions

Multiple Choice

In the ground state, which shell of a potassium atom has an electron with the greatest amount of energy?

• (1) fi rst

• (2) second

• (3) third

• (4) fourth

Potassium has 4 energy levels .
The electrons in the highest energy level has the most energy.

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Answer

Multiple Choice

Which electron shell in an atom of calcium in the ground state has an electron with the greatest amount of energy?

• 1

• 2

• 3

• 4

Calcium has 4 energy levels .
The electrons in the highest energy level has the most energy.

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Answer

Multiple Choice

Compared to the energy of an electron in the second shell of an atom of sulfur, the energy of an electron in the

• (1) first shell is lower

• (2) first shell is the same

• (3) third shell is lower

• (4) third shell is the same

Calcium has 3 energy levels .
The electrons in the first energy level has the least amount of energy.

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Answer

Multiple Choice

Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have

• (1) less energy and the same charge

• (2) less energy and a different charge

• (3) more energy and the same charge

• (4) more energy and a different charge

Berillium has 2 energy levels .
The electrons in the second energy level has the most energy.

ELECTRONS are ALWAYS Negative

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Answer

Each energy level can hold a maximum number of electrons. Energy Level 1 = 2 electrons
Energy Level 2 = 8 electrons
Energy Level 3 = 18 electrons
Energy Level 4 = 32 electrons

​Number of Electrons in each energy Level

Multiple Choice

How many electrons are found in the 4th energy level of a Bromine, Br Atom?

• 2

• 8

• 7

• 18

Multiple Choice

How many electrons are found in the 3rd energy level of a Xenon, Xe Atom?

• 2

• 3

• 8

• 18

Multiple Choice

How many electrons are found in the 3rd energy level of a Phosphorous, P Atom?

• 2

• 3

• 5

• 8