Free Printable Chem Ch. 4: Arrangement of Electrons in Atoms

1.

Which of the following orbital notations for phosphorus is correct?

a)

b)

c)

d)

2.

The diagram represents two electrons with

a)

opposite spin states.

b)

the same spin state.

c)

different energies.

d)

the same energy.

3.

A quantum of energy is the

a)

frequency of electromagnetic energy given off by an atom.

b)

wavelength of electromagnetic energy gained by an atom.

c)

minimum quantity of energy that can be lost or gained by an atom

d)

continuous spectrum of energy given off by an atom.

4.

Quantum numbers are sets of numbers that

a)

are characteristic only of the hydrogen atom.

b)

consist of multiples of two.

c)

specify properties of electrons.

d)

relate the energies of protons in the atomic nucleus.

5.

Which mathematically describes the wave properties of electrons?

a)

quantum theory

b)

atomic theory

c)

the Bohr model of the atom

d)

the Rutherford model of the atom

6.

A photon is emitted from a gaseous atom when an electron moves to its ground state from a(n)

a)

inner shell.

b)

excited state.

c)

n = 0 state.

d)

less energetic state.

7.

In the equation $c=\lambda\nu$ , $\lambda\$ represents

a)

the wavelength.

b)

the frequency.

c)

the speed of light.

d)

Planck’s constant.

8.

What is the frequency (v) of light whose wavelength (λ) is $6.33\times10^{-7}$ ? $\left(c=3.00\times10^8\ \frac{m}{s}\right)$
$v=\frac{c}{\lambda}$

a)

$4.74\times10^{-4\ }Hz$

b)

$4.74\times10^{-2\ }Hz$

c)

$4.74\times10^{14\ }Hz$

d)

$4.74\times10^{16\ }Hz$

9.

What is the frequency (v) of a photon whose energy (E) is $3.4\times10^{-19}\ J$ ? $6.626\times10^{-34\ }j\cdot s$
$v=\frac{E}{h}$

a)

$8.8\times10^{26}\ Hz$

b)

$5.1\times10^{14}\ Hz$

c)

$3.4\times10^{-15}\ Hz$

d)

$3.4\times10^{-52}\ Hz$

10.

When electromagnetic radiation strikes the surface of a metal, electrons are ejected from the metal’s surface. This is a description of the

a)

photoelectric effect.

b)

quantum theory.

c)

Aufbau principle.

d)

effects of diffraction.

11.

The process of an atom taking in energy when it moves to a higher energy state is called

a)

absorption.

b)

emission.

c)

translation.

d)

regression.

12.

The lowest energy state of an atom is its

a)

highest-occupied energy level.

b)

principle quantum number.

c)

electron configuration.

d)

ground state.

13.

Which is a wave property that electrons possess?

a)

emission

b)

radiation

c)

diffraction

d)

absorption

14.

Which of these does the angular momentum quantum number indicate?

a)

the shape of an orbital

b)

the main energy level of an electron

c)

the orientation of an orbital around the nucleus

d)

the spin state of an electron in an orbital

15.

What is the correct electron configuration for an atom with 7 electrons?

a)

1s²2s³2p²

b)

1s²2s²2p²3s¹

c)

1s²2s²2p³

d)

1s²2s⁵

16.

What is the correct noble-gas notation for the electron configuration of an atom of chlorine?

a)

[Ar]3s²3p⁵

b)

[Ne]3s²3p⁴

c)

[Ar]3s²3p⁴

d)

[Ne]3s²3p⁵

17.

What is the atomic number of the element with the noble-gas notation [Kr]5s¹?

a)

35

b)

36

c)

37

d)

38

18.

Which of the following is a noble gas?

a)

carbon

b)

oxygen

c)

sodium

d)

neon

19.

The electron configuration below represents an atom of which element?

1s²2s²2p⁶3s²3p⁴

a)

sulfur

b)

oxygen

c)

silicon

d)

selenium

20.

The distance between corresponding points on adjacent waves is the wave’s_____.

a)

energy.

b)

wavelength.

c)

frequency.

d)

speed.

21.

How many possible values are there for the spin quantum number?

a)

2

b)

3

c)

4

d)

5

22.

An electron occupies the lowest energy orbital that can receive it.

a)

Hund’s rule

b)

Pauli exclusion principle

c)

Bohr model of the atom

d)

Aufbau’s principle

23.

All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.

a)

Hund’s rule

b)

Pauli exclusion principle

c)

Bohr model of the atom

d)

Aufbau’s principle

24.

No two electrons in the same atom can have the same four quantum numbers.

a)

Hund’s rule

b)

Pauli exclusion principle

c)

Bohr model of the atom

d)

Aufbau’s principle

25.

The single electron of hydrogen circles the nucleus only in allowed orbits, each with a fixed energy.

a)

Hund’s rule

b)

Pauli exclusion principle

c)

Bohr model of the atom

d)

Aufbau’s principle

Chem Ch. 4: Arrangement of Electrons in Atoms

Total questions: 25

Worksheet time: 13mins

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