Question

please say the correct answer ​

Answer 1

I think option A is correct one

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Answer 2

Explanation:

c is the correct answer

When an atom emits an alpha particle in alpha decay, the atom's mass number decreases by four due to the loss of the four nucleons in the alpha particle. The atomic number of the atom goes down by exactly two, as a result of the loss of two protons – the atom becomes a new element.