Question:
When a radioactive material emits an \(\alpha\)-particle, its position in the periodic table
When a radioactive material emits an \(\alpha\)-particle, its position in the periodic table
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Alpha decay reduces atomic number by 2.
Updated On: Apr 24, 2026
- is lowered by three places
- is increased by two places
- remains unchanged
- is lowered by two places
- is increased by one place
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The Correct Option is D
Solution and Explanation
Concept:
\(\alpha\)-decay:
\[
^A_ZX \rightarrow ^{A-4}_{Z-2}Y
\]
Step 1: Effect on atomic number.
\[ Z \rightarrow Z-2 \]
Step 2: Periodic position.
Element shifts two places to left.
Step 1: Effect on atomic number.
\[ Z \rightarrow Z-2 \]
Step 2: Periodic position.
Element shifts two places to left.
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