Beta Decay
Trending Questions
Q. When 90Th228 transforms to 83Bi212, then the number of the emitted α -and β -particles is, respectively
- 8α, 7β
- 4α, 7β
- 4α, 4β
- 4α, 1β
Q.
Mass defect (Δm) is given by?
Δm = (Mass of neutrons - Mass of protons) - (Experimental mass of nucleus)
Δm = (Mass of protons + Mass of neutrons) - (Experimental mass of nucleus)
Δm = Mass of neutrons - Mass of protons
Δm = Mass of protons - Mass of neutrons
Q. A radioactive element AZX loses two successive β−particles and an α−particles such that resulting nuclide is PQY. Find the values of P and Q in terms of A and Z.
[5 MARKS]
[5 MARKS]
Q. An atomic nucleus A is composed of 84 protons and 128 neutrons.
(i)The nucleus A emits an alpha particle and is transformed into nucleus B. What is the composition of nucleus B?
(ii) The nucleus B emits a beta particle and is transformed into a nucleus C. What is the composition of nucleus C?
(iii) Does the composition of nucleus C change if it emits gamma radiations?
[5 MARKS]
(i)The nucleus A emits an alpha particle and is transformed into nucleus B. What is the composition of nucleus B?
(ii) The nucleus B emits a beta particle and is transformed into a nucleus C. What is the composition of nucleus C?
(iii) Does the composition of nucleus C change if it emits gamma radiations?
[5 MARKS]
Q. In which radioactive disintegration, neutron dissociates into proton and electron
- γ− emission
- He++− emission
- β− emission
- Positron emission
Q.
In beta decay, an electron, e− (or a positron, e+) is emitted by a nucleus. What happens to the atom, among the following options?
The atom gets positively charged if e− is emitted, or negatively charged if e+ is emitted.
The atom gets negatively charged if e− is emitted, or positively charged if e+ is emitted.
The atom stays neutral, since a proton is also created to balance the charge.
Any of the three can take place, depending on other factors.
Q. A neutron dissociates into a proton and an electron along with an anti-neutrino, in ______ emission.
- γ
- X
- α
- β