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4.3 Nuclear Symbols of Atoms and Ions 2025

Total questions: 15

Worksheet time: 13mins

Name
Class
Date
1.

How many electrons in a neutral lithium atom?

a)

3

b)

7

c)

4

d)

1

2.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
3.

How many electrons does 3216S-2

a)

32

b)

14

c)

16

d)

18

4.
What charge does an atom have if it GAINS an electrons?
a)
Positive (+)
b)
Negative (-)
5.

How many electrons does the following ion have?

a)

3

b)

7

c)

10

d)

14

6.
How many electrons does an Iodine atom have?
a)
53
b)
126
c)
73
d)
179
7.

What element has 8 protons?

a)

Fluorine

b)

Carobn

c)

Oxygen

d)

Nitrogen

8.

What is the charge of the following atom

6 protons, 8 neutrons, and 8 electrons

a)

+2

b)

+1

c)

-1

d)

-2

9.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

10.

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

a)

b)

c)

d)

11.

The correct hyphen notation for the nuclear symbol given is

a)

chromium - 24

b)

chromium - 50

c)

chromium - 74

d)

chromium - 26

12.

How many neutrons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

13.

How many electrons does this magnesium ion have?

a)

24

b)

12

c)

10

d)

14

14.

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

15.

How many ELECTRONS does copper have if it has the following charge: Cu2+ ?

a)

64

b)

35

c)

27

d)

29