Question

A produce B by alpha emissions if B is the group 16 of the periodic table what is group of A ?​

Answer 1

Answer:

Solution. When α-emission occurs, atomic number decreases by 2 and the atomic mass number by 4. Thus, if 'B' belongs to group 16 of the periodic table, that means the outermost orbit will contain 6 electrons. Thus, 'A' will have 8 electrons in its valence shell and it will belong to group 18 of the periodic table

Explanation:

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