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Cards (10)
What are isotopes?
Atoms of an element having the
same
atomic
number
but
different
mass
number
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How was the existence of isotopes demonstrated?
Through mass
spectroscopy
experiments
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What does the atomic number identify?
An
element
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How do the atoms of isotopes of an element compare in terms of protons and electrons?
They have the
same
number
of
protons
and
electrons
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In what way do the atoms of isotopes differ?
In the
number
of
neutrons
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What is the formula for mass number?
Mass
number
=
number
of
protons
+
number
of
neutrons
m
a
s
s
n
o
.
=
mass \, no. =
ma
ss
n
o
.
=
n
o
.
o
f
p
+
no. \, of \, p^+
n
o
.
o
f
p
+
+
+
+
n
o
.
o
f
n
0
no. \, of \, n^0
n
o
.
o
f
n
0
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What does the formula
A
=
A =
A
=
Z
+
Z +
Z
+
n
0
n^0
n
0
represent?
A =
mass
number
Z =
atomic
number
(number of protons)
n
0
=
n^0 =
n
0
=
n
o
.
o
f
n
e
u
t
r
o
n
s
no. \, of \, neutrons
n
o
.
o
f
n
e
u
t
ro
n
s
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How can you calculate the number of neutrons in an atom?
By
subtracting
the number of
protons
from the
mass
number
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If an element has a mass number of 12 and an atomic number of 6, how many neutrons does it have?
6
neutrons
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What is the relationship between atomic number and the number of protons and electrons?
Atomic number =
number
of
protons
Atomic number =
number
of
electrons
View source
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