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Isotopes

Total questions: 17

Worksheet time: 26mins

Name
Class
Date
1.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
2.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
3.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
4.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
5.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
6.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8
7.
Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.
a)
n0 ;  atomic #’s
b)
p+ ; atomic #’s
c)
e- ; atomic masses
d)
n0 ; atomic masses
8.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
9.
If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. 7735X  II. 7733X  III. 8137X  IV. 8135 X
a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
10.
How many neutrons does an atom of the isotope Neon-22 have?
a)
12
b)
10
c)
22
d)
20
11.
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
12.
Which of the following statements regarding subatomic particles is incorrect?
a)
Protons are positively charged particles and neutrons have no charge.
b)
The relative mass of the proton, electron and neutron the same.
c)
In a neutral atom the number of protons equals the number of electrons.
d)
Isotopes of an element have the same number of protons but a different number of neutrons.
13.
Isotopes of the same element have the same number of 
a)
protons
b)
neutrons
c)
electrons
d)
not enough information
14.
Which of the following particle pairs has approximately the same mass?
a)
protons and neutrons
b)
protons and electrons
c)
neutrons and electrons
d)
protons, neutrons and electrons
15.
A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons.  What is the mass number for this isotope?
a)
12
b)
14
c)
6
d)
8
16.

Which of the following statements regarding subatomic particles is incorrect?

a)

Protons are positively charged particles and neutrons have no charge.

b)

The relative mass of the proton, electron and neutron the same.

c)

In a neutral atom the number of protons equals the number of electrons.

d)

Isotopes of an element have the same number of protons but a different number of neutrons.

17.

Which of the following statements regarding subatomic particles is incorrect?

a)

Protons are positively charged particles and neutrons have no charge.

b)

The relative mass of the proton, electron and neutron the same.

c)

In a neutral atom the number of protons equals the number of electrons.

d)

Isotopes of an element have the same number of protons but a different number of neutrons.

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