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Atoms, Ions, Isotopes, Avg Mass

Total questions: 44

Worksheet time: 1hrs 1mins

Name
Class
Date
1.

The positive particles of an atom are ___________.

a)

electrons

b)

protons

c)

neutrons

d)

positrons

2.

The center of an atom where its neutrons and protons are is called the _____________.

a)

nucleus

b)

electron cloud

c)

center

d)

orbitals

3.

An atom with atomic number 6 would have how many protons?

(a)  

4.

Particles in an atom that are neutral and have no charge are

a)

protons

b)

electrons

c)

neutrons

5.

What is the atomic number for an element with three protons?

(a)  

6.

A particle that moves around the nucleus is called an _________.

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

7.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)

valence electrons

8.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)

21

9.
What is the atomic mass of "F"
a)
9
b)

28

c)

18

d)
19
e)

10

10.

Different isotopes have...

a)

different masses

b)

different protons

c)

different electrons

d)

different neutrons

e)

different atomic number

11.

Isotopes are atoms that have the same number of protons but a different number of _____________.

a)

neutrons

b)

electrons

c)

atoms

d)

protons

12.

The number of protons + neutrons in an atomic nucleus is referred to as what?

a)

Atomic number

b)

Atomic mass

c)

Mass number

d)

valence electrons

13.

Atoms of the same element with differing number of electrons are called ________.

a)

elements

b)

atoms

c)

ions

d)

isotopes

14.

Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.

a)

15

b)

18

c)

33

d)

48

15.

One of the isotopes of sulfur is represented as sulfur-35 or S-35. What does the number 35 signify?

a)

number of protons

b)

number of neutrons

c)

atomic number

d)

mass number

e)

valence electrons

16.

Which is the best nuclear symbol for a potassium atom with 21 neutrons?

a)
b)
c)
d)
17.

Which of the following is the nuclear symbol for lithium-6

a)
b)
c)
d)
18.

Using the atomic masses and relative abundance of the isotopes of nitrogen given below, determine the average atomic mass of nitrogen.

N-14: 14.003 amu; 99.63% N-15: 15.000 amu; 0.37%

a)

14.003 amu

b)

14.007 amu

c)

14.506 amu

d)

15.000 amu

19.

Vitellium (Vi) has the following composition:

Vi–188: 187.9122 amu; 10.861%

Vi–191: 190.9047 amu; 12.428%

Vi–193: 192.8938 amu; 76.711%

Based on this data, what can you predict about the average atomic mass of vitellium?

a)

It will be equal to the arithmetic mean of the masses of the three isotopes.

b)

It will be closer to the mass of Vi–188.

c)

It will be closer to the mass of Vi–193.

d)

It will be equal to the mass of Vi–193.

20.

What is a positive ion called?

a)

anion

b)

cation

c)

isotope

d)

covalent

21.

What is a negative ion called?

a)

anion

b)

cation

c)

covalent

d)

isotope

22.

Match the following

a)

Atomic number

1.

number of protons

b)

Mass Number

2.

protons + neutrons

c)

Charge

3.

protons - electrons

d)

neutrons

4.

mass# - atomic#

23.

What is a representation of an ion?

a)

Li

b)

Na-22

c)

O-2

24.

What type of atom is this?

a)

Neutral atom

b)

Cation

c)

Anion

d)

Isotope

25.

What is the atomic number of this element?

a)

12

b)

24

c)

23

d)

35

26.
Which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
27.
Carbon has an atomic number of 6 and an atomic mass of 12. Which elements are considered isotopes of carbon?
a)
Carbon-12
b)
Carbon-13
c)
Carbon-14
d)
Both Carbon-13 and Carbon-14
28.

How many protons, neutrons, and electrons?

a)

proton = 16, neutron = 8, electron = 10

b)

proton = 8, neutron = 16, electron = 8

c)

proton = 8, neutron = 8, electron = 10

d)

proton = 6, neutron = 2, electron = 6

29.

How many protons, neutrons, and electrons?

a)

proton = 6, neutron = 4, electron = 1

b)

proton = 4, neutron = 4, electron = 5

c)

proton = 1, neutron = 6, electron = 10

d)

proton = 4, neutron = 2, electron = 3

30.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
31.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
32.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
33.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
34.
How many electrons can the d sublevel hold?
a)
14
b)
10
c)
2
d)
6
35.
How many electrons can the s sublevel hold?
a)
14
b)
10
c)
2
d)
6
36.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s24d104p5

b)

[Kr]5s24d105p5

c)

[Xe]5s25d105p5

d)

none of the above

37.
What is the electron configuration for this atom?
a)
1s22s22p6
b)
1s22s22p5
c)
1s22s22p3
d)
2s22p3
38.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
39.
Identify the element in Period 5 that has 1 valence electron?
a)
Rb
b)
Nb
c)
Ag
d)
Sb
40.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
41.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
42.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
43.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
44.

Label the three parts of an electron configuration:

a)

protons

b)

section

c)

family

d)

period (row)

e)

block (orbital)

f)

electrons

g)

group

1
2
3
1)
2)
3)

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