An atomic nucleus A is composed of 84 protons and 128 neutrons. The
nucleus A emits an alpha particle and is transformed into nucleus 3.0
What is the composition of nucleus B? ii) The nucleus Bemits a beta
particle and is transformed into nucleus C. What is the composition of
nucleus C?) What is the mass number of nucleus A? iv) Does the
composition of nucleus C change if it emits gamma radiations?
Answers
Answer:
Given: Composition of atomic nucleus A=84 protons and 128 neutrons.
Mass noumber of A=84+128=212
Atomic number of A=84
The nucleus A emits an alpha particle, the mass number decreases by 4 and the atomic number decreases by 2.
84
212
A
−α
82
208
B
Number of protons in B=82
Number of neutrons in B=208−82=126
(ii)
82
208
B
−β
83
208
C
Number of protons in C=83
Number of neutrons in C=208−83=125
(iii) The composition of nucleus C does not change if it emits gamma radiations.
Answer:
An atomic nucleus A is composed of 84 protons and 128 neutrons. The
nucleus A emits an alpha particle and is transformed into nucleus 3.0
What is the composition of nucleus B? ii) The nucleus Bemits a beta
particle and is transformed into nucleus C. What is the composition of
nucleus C?) What is the mass number of nucleus A? iv) Does the
composition of nucleus C change if it emits gamma radiations?