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timurjin [86]
3 years ago
13

When an isotope emits an alpha particle, its atomic number

Chemistry
1 answer:
Yuri [45]3 years ago
5 0

Answer:

The atomic number of the isotope is reduced by 2 and atomic mass is reduced by 4.

Explanation:

Alpha particle is doubly ionized helium atom. The atomic mass of helium atom is 4 u and atomic number of helium atom is 2. The emission of alpha particle means doubly ionized helium atom will be released from the isotope.

Hence, the emission of the alpha particle will decrease the atomic mass by 4 and atomic number by 2.

Hence, option(a) is correct

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