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Structure of Atom

Total questions: 28

Worksheet time: 14mins

Name
Class
Date
1.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
2.
What are the maximum number of electrons that go on the first 3 energy levels?
a)
2,4,16
b)
2,8,18
c)
4,8,12
d)
3,4,6
3.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
4.
How many protons, electrons and neutrons does an neutral atom of Calcium have?  Its atomic number is 20 and the mass number is 40.
a)
20 protons, 18 electrons and 40 neutrons
b)
20 protons, 20 electrons and 20 neutrons
c)
40 protons, 40 electrons and 20 neutrons
d)
20 protons, 18 electrons and 20 neutrons
5.
Which statement best describes an electron?
a)
Smaller mass than a proton and a negative charge
b)
Smaller mass than a proton and a positive charge
c)
Greater mass than a proton and a negative charge
d)
Greater mass than a proton and a positive charge
6.

A wave with a large wavelength will have a ______ frequency and _____ energy

a)

high, low

b)

high, high

c)

low, high

d)

low, low

7.

The frequency of violet light is 7.5x1014 Hz. What is its wavelength?

a)

4.0x10-7 m

b)

4.0x107 m

c)

2.25x1023m

d)

2.25x1023 Hz

8.
The distance from one point to the next corresponding point on a wave is called the ________________.
a)
waveform
b)
peak
c)
amplitude
d)
wavelength
9.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
10.

The line with the shortest wavelength is produced in the hydrogen spectrum when electron moves

a)

from n=2 to n=1

b)

from n=4 to n=1

c)

from n=3 to n=1

d)

from n=4 to n=3

11.

The radius of the second Bohr orbit for hydrogen atom is

a)

1.65 Angstrom

b)

4.76 Angstrom

c)

0.529 Angstrom

d)

2.12 Angstrom

12.

The wave number of the first emission line in the H atom spectrum in the Balmer series in terms of Rydberg’s constant (R) is given by

a)

5R36cm−1\frac{5R}{36}cm^{-1}

b)

7R144cm−1\frac{7R}{144}cm^{-1}

c)

3R4cm−1\frac{3R}{4}cm^{-1}

d)

9R400cm−1\frac{9R}{400}cm^{-1}

13.

There may be a maximum of ____ p orbitals at a given energy level.

a)

2

b)

6

c)

3

d)

8

14.

This shape is that of a...

a)

s orbital

b)

d orbital

c)

p orbital

d)

f orbital

15.

The principle quantum number, n, represents the:

a)

spin value

b)

suborbital value

c)

energy level

d)

magnetic value

16.
How many quantum numbers are needed to describe the energy state of an electron in an atom?
a)
1
b)
2
c)
3
d)
4
17.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
18.
The angular momentum quantum number indicates the
a)
orientation an orbital around the nucleus.
b)
shape of an orbital.
c)
direction of the spin of the electron in its orbital.
d)
main energy level of an orbital.
19.
An electron fro which n=4 has more ____ than an electron for which n=2.
a)
spin
b)
particle nature
c)
energy
d)
wave natrue
20.
What is the electron configuration for nitrogen?
a)
1s2 2s2 2p3
b)
1s2 2s3 2p2
c)
1s2 2s3 2p1
d)
1s2 2s2 2p2 3s1
21.
A line spectrum is produced when an electron moves from one energy level
a)
into the nucleus.
b)
to another position in the same sublevel.
c)
to a higher energy level.
d)
to a lower energy level.
22.
An orbital that can never exist according to the quantum description of the atom is
a)
6d.
b)
3f.
c)
3d.
d)
8s.
23.

'All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron'. this is the statement for?

a)

Aufbau principle

b)

Pauli exclusion principle

c)

Hund’s rule

d)

Core Notation

24.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
25.

What atom matches this electron configuration?

1s22s22p63s23p64s13d10

a)

Zinc

b)

Copper

c)

Nickel

d)

Germanium

26.

The de Broglie wave equation showed that the wavelength of any moving object is equal to

a)

m/hν

b)

h/mv

c)

v/mh

d)

hm/v

27.

What is the value of Planck's constant?

a)

3×1083\times10^8 m/s

b)

3×10−83\times10^{-8} m/s

c)

6.63×10346.63\times10^{34} J s

d)

6.63×10−346.63\times10^{-34} J s

28.

What is the frequency of green light that has a wavelength of 500 nm?

a)

 6×10−36\times10^{-3}  Hz

b)

 6×1056\times10^5  Hz

c)

 6×10146\times10^{14}  Hz

d)

 6×10−166\times10^{-16}  HZ

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