in the following equations, fill in the missing species.

a)    ? + ⁰₋₁e → ⁷li

this is an electron capture, the atomic of the parent nuclide will be 4, therefore

⁷₄Bo + ⁰₋₁e → ⁷li

b)    ⁹li → ? + ⁰ ₋₁ e

this is a beta decay and the nuclide will be  boron-7

⁹li → ⁷₄Bo + ⁰ ₋₁ e

c) ²² ₁₁Na → ? + ²²₁₀Ne

when neon-22 is formed from  positron emission , the parent nuclide is fluorine-22

²² ₁₁Na → ⁰_-1e   + ²²₁₀Ne