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Byju's Answer
Standard IX
Chemistry
Properties of Alpha, Beta and Gamma Radiations
Decrease in a...
Question
Decrease in atomic number is observed in :
A
α
-emission
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B
β
-emission
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C
positron
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D
electron capture
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Solution
The correct options are
A
α
-emission
B
positron
C
electron capture
Emission of an
α
-particle,
298
92
U
→
234
90
T
h
+
4
2
H
e
(
α
-particle)
Emission of positron,
13
7
N
→
13
6
C
+
0
+
1
e
K-electron capture,
194
79
A
u
+
e
0
−
1
→
194
78
P
t
.
Hence, option A, C and D are correct.
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Similar questions
Q.
Decrease in atomic number is observed during :
A)
α
-emission
B)
β
-emission
C) positron emission
D) electron capture
Q.
A decrease in atomic number is observed during
Q.
64
C
u
(half-life-12.8 hr) decays by
β
−
-emission (38%),
β
+
-emission (19%) and electron capture (43%). Calculate partial half lives for electron capture?
Q.
An emission of
α
-particle decreases the atomic number of parent element by :
Q.
After the emission of a
β
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214
83
B
i
, the number of neutrons in the atom is:
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