Advertisements
Advertisements
प्रश्न
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.
उत्तर
\[\ce{^A_ZX ->[-α] ^{A-4}_{Z-2}X_1 -> ^{A-4-4}_{Z-2-2}X_2 ->[-β]^{A-8}_{Z-4+1}R}\]
After emitting two alpha particles
Atomic number = Z - 4
Mass number = A - 8
After emitting a beta particle
Atomic number = Z - 4 + 1
mass number = A - 8
Final atomic number = 85
85 = Z - 4 + 1
Z = 88
Final mss number 222
222 = A - 8
A = 230
APPEARS IN
संबंधित प्रश्न
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)?
Complete the following nuclear change:
\[\ce {^a_x P -> Q + ^0_-1β}\]
Complete the following nuclear change:
\[\ce{^238_92U -> ^234_90Th}\] + ______ + energy
Complete the following nuclear change:
\[\ce {^238_92 P \text ->[α] Q \text ->[β] R \text ->[β] S}\]
Complete the following nuclear change:
\[\ce {^A_Z X \text ->[α] X_1 \text ->[γ] X_2 \text ->[2β] X_3}\]
An element P disintegrates by α-emission and the new element suffers two further disintegration, both by β-emission, to form an element Q. Explain that fact P and Q are isotopes.
Name the radiations that are emitted during the decay of a nucleus, which has highest penetrating power?
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?
