### n element with (Z=69) emits 2α and 1β particles in succession. What will be the group number of new element formed? - Group 2 - Group 13 - Group 5 - Group 3
Question
### n element with (Z=69) emits 2α and 1β particles in succession. What will be the group number of new element formed?
- Group 2
- Group 13
- Group 5
- Group 3
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Solution 1
The atomic number (Z) of an element determines its position in the periodic table and hence its group number.
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The atomic number of the given element is 69.
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When an element emits an alpha particle, its atomic number decreases by 2. Since the element emits 2 alpha particles, the atomic number Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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