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WorksheetsPROTON NUMBER
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
2.
Where is the proton located?
a)
In the very dense nucleus
b)
Floating around in the negative electron cloud
c)
the loose nucleus
d)
the positive electron cloud
3.
What number on the element key tells you how many protons an element has?
a)
Atomic Mass
b)
Element name
c)
Atomic number
d)
Element Symbol
4.
Which subatomic particle causes the nucleus to have a positive charge?
a)
Neutron
b)
Electrons
c)
Protons
d)
Valence electrons
5.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
6.
Isotopes of an element have a different number of...
a)
Protons
b)
Neutrons
c)
Electrons
d)
Mass
7.
A neutral atom of the isotope 2612Mg would consist of
a)
12 protons, 26 neutrons, 26 electrons
b)
26 protons, 12 neutrons, 26 electrons
c)
26 protons, 14 neutrons, 14 electrons
d)
12 protons, 14 neutrons, 12 electrons
8.
What is the mass number of the element shown?
a)
15
b)
7
c)
8
d)
0
9.
An atom has 12 protons and 13 neutrons in its nucleus. Which is the correct symbol?
a)
b)
c)
d)
10.
12 protons, 10 electrons, 12 neutrons
a)
24Mg−2
b)
24Cr+2
c)
24Cr−2
d)
24Mg+2
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