Advertisements
Advertisements
Question
Complete the following nuclear change:
\[\ce{^238_92U -> ^234_90Th}\] + ______ + energy
Advertisements
Solution
The mass number drops by four and the atomic number drops by two as a result of α emission. Additionally, an α particle is equivalent to a two-proton, two-neutron helium nucleus.
\[\ce {^238_92 U -> ^234_90 Th + \underline{^4_2\ce{He}} + Energy}\]
APPEARS IN
RELATED QUESTIONS
A certain radioactive nucleus emits a particle that leaves its mass unchanged, but increased its atomic number by one. Identify the particle and write its symbol.
What changes occurs in the nucleus of radioactive elements when it emits (a) an alpha particle (b) beta particle and (c) gamma radiations? Give one example in each case in support of your answer.
A nucleus is \[\ce {^24_11 Na}\] is β-radioactive.
What are the numbers 24 and 11 called?
A nucleus of stable phosphorus has 15 protons and 16 neutrons.
- What is its atomic number and mass number?
- The nucleus of radio phosphorous has one neutron more than the stable nucleus. What will be its atomic number and mass number?
- What will be the atomic number and mass number of new nucleus formed by decay of a β-particle by the radio phosphorus in part (b)?
A nucleus \[\ce {^A_Z X}\] emits 2 α particles and 1 β particles to form a nucleus \[\ce {^222_85 R}\]. Find the atomic nucleus and mass number of X.
Complete the following nuclear change:
\[\ce {^a_x P -> Q + ^0_-1β}\]
Complete the following nuclear change:
\[\ce {^238_92 P \text ->[α] Q \text ->[β] R \text ->[β] S}\]
Complete the following nuclear changes:
\[\ce {X \text ->[β] X_1 \text ->[α] X_2 \text ->[α] ^172_69 X_3}\]
Does the emission of gamma radiation result in a change in the mass number?
A radioactive source emits three type of radiations.
From which part of the atom do these radiations come?
