WorksheetsIsotopes review
Total questions: 25
Worksheet time: 20mins
Isotopes of an element have a different number of...
Protons
Neutrons
Electrons
Mass
How many protons are in the isotope pictured above?
29
34
63
92
How many neutrons are in the isotope pictured above?
29
34
63
92
The mass number of an isotope is made up of which subatomic particles?
protons and electrons
protons and neutrons
electrons and neutrons
protons, neutrons and electrons
The atomic number of an element is the total number of which subatomic particle found in the nucleus?
Electron
Neutron
Proton
Neutrons + Protons
Element X has 13 neutrons with a mass number of 28. Element Y has 13 protons. These elements are:
Different elements
Isotopes
Element Q has 56 protons and 18 neutrons.
Element R has 56 protons and 17 neutrons. These elements are:
different elements
isotopes
In the notation 289115 Mc, the number 289 is the
mass number
atomic number
number of neutrons
number of electrons
Select all that apply. In the notation 289115 Mc, the number 115 is the
mass number
atomic number
number of neutrons
number of electrons
number of protons
How many neutrons does this isotope of titanium have?
48
22
26
70
The name of this isotope of titanium is
titanium-48
titanium-22
titanium-26
Iodine-129 has _ protons
(a)
Iodine-129 has _ neutrons
(a)
If X is the symbol for an element, select the two symbols represent isotopes of the same element.
7735X
7937X
8136X
8135X
If a proton is added or removed from an atom, what happens?
It becomes a different element.
It becomes a different isotope.
Nothing happens.
What is the difference between Neon-20 and Neon-22?
They have different numbers of electrons.
They have different numbers of neutrons.
Only 1 is radioactive.
No difference.
Which atom of these isotopes has 3 protons? The symbol for lithium is Li.
Lithium-6
Lithium-7
All of them.
Lithium-9
An atom has 12 protons and 13 neutrons in its nucleus. Which is the correct symbol?
