Free Printable Quantum Mechanical Model of an Atom

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Quantum Mechanical Model of an Atom

Total questions: 20

Worksheet time: 18mins

Name

Class

Date

What is the shape of p orbitals?

Peanut shaped

Spherical shaped

Flower shaped

Dumbbell shaped

How many electrons can the first energy level hold?

What is the maximum number of electrons that can be on the p sublevel?

What shape are d orbitals?

Peanut shaped

Spherical shaped

Dumbbell shaped

Clove leaf shaped

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

Hund’s Rule

Aufbau Principle

Pauli Exclusion Principle

Hund’s rule states…

Atomic orbitals have opposite spins and 2 electrons each

Electrons occupy orbitals of highest energy first and energy level changes as you go up

Electrons occupy orbitals of lowest energy first, starting with 1s

Electrons occupy orbitals of equal energy, one electron enters EACH orbital ONE AT A TIME until orbitals of the entire energy level have one electron with the SAME SPIN.

How many orbitals are there in the "d" sublevel?

How many orbitals are there in the "s" sublevel?

Which sublevel has the highest energy?

10.

The Quantum Mechanical Model is the most recent/modern atomic model.

True

False

11.

The quantum number "n" represents:

electron spin

orbital

sublevel

main energy level

12.

Which scientist developed the Quantum Mechanical

E. Schroedinger

W. Heisenberg

J. Dalton

N. Bohr

13.

What is the Pauli Exclusion Principle?

An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins

An atomic orbital can hold a minimum of 6 electrons, each with opposite spins

An atomic orbital can hold a maximum of 6 electrons, each with the same spin

An atomic orbital can hold a minimum of 2 electrons, each with opposite spins

14.

If the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?

15.

Which of the following sub-levels is correctly designated?

1p⁵

3f⁹

2p⁶

3d¹¹

16.

Which of the following statement is wrong?

Two electrons must occupy each equal energy orbital before additional electrons can occupy the same orbitals.

A maximum of two electrons may occupy the same orbitals.

In filling up orbitals, electron occupies the lowest energy orbital first before the higher energy orbitals.

None of the choices.

17.

What is the electron configuration of Argon?

1s² 2s² 2p⁶

1s² 2s² 2p⁶ 3s¹

1s² 2s² 2p⁶ 3s²

1s² 2s² 2p⁶ 3s² 3p⁶

18.

What is the electron configuration of Gallium, ₃₁Ga?

1s² 2s² 2p⁶ 3s² 3p⁵ 4s² 3d¹⁰ 4p¹

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹ 4p²

1s² 2s² 2p⁶ 3s² 3p⁵ 4s² 3d¹⁰ 4p²

19.

Which one of the following electron configurations is INCORRECT?

1s² 2s² 2p⁶ 3s² 3p⁶

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹ 4p²

20.

Which of the following electron configurations is CORRECT?

1s² 2s³

1s² 2s² 2p⁶

1s² 2s² 3s²

1s² 2s² 2p⁶ 3s² 4s²

100 %

Quantum Mechanical Model of an Atom

Total questions: 20

Worksheet time: 18mins

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