During β-emmision : (a) the mass number remains unchanged, but atomic number increases by 1 amu. (b) the mass number remains unchanged, but atomic number decreases by 1 amu. (c) the mass number increases by 1 amu, but atomic number remains same. (d) the mass number and atomic number decrease by 1 amu.

During β-emmision : (a) the mass number remains unchanged, but atomi

1.	During β-emmision : (a) the mass number remains unchanged, but atomic number increases by 1 amu. (b) the mass number remains unchanged, but atomic number decreases by 1 amu. (c) the mass number increases by 1 amu, but atomic number remains same. (d) the mass number and atomic number decrease by 1 amu.
Answer» (a) the mass number remains unchanged, but atomic number increases by 1 amu.

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