Advertisements
Advertisements
Question
An element P has an atomic mass of 239 and an atomic number of 92. It
emits a beta particle forming an element Q. Q can be represented by:
Options
239
X
91239
X
92
239
X
93238
X
92235
X
90
MCQ
Advertisements
Solution
239
X
93
Explanation:
Given: Mass number (A) = 239
Atomic number (Z) = 92
Emission = 1 beta (β⁻) particle
The mass number.
When a β⁻-particle is emitted, the mass number remains unchanged.
\[ A=239 \]
The atomic number.
When a β⁻-particle is emitted, the atomic number increases by 1.
\[ Z=92+1\]
= 93
\[ {\,^{239}_{93}Q}\]
shaalaa.com
Is there an error in this question or solution?
