Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li

The question is incomplete, here is the complete question:

Two atoms interact with each other as shown by the equation. Complete the equation by filling in the missing parts.

The isotopic symbol of the missing part is

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

For the given fusion reaction:

Total mass on reactant side = total mass on product side

2 + 2 = A + 1

A = 3

Total atomic number on reactant side = total atomic number on product side

1 + 1 = Z

Z = 2

Hence, the isotopic symbol of the missing part is