Question

9Be4+_=C12+_complete the reaction​

Answer 1

$4Be9+2He4→6C12+X</p><p></p><p>$

No. of protons are already balanced with C.

∴ X carries no charge.

and 9+4>12 by 1 unit mass.

∴ X carries one unit mass.

It's a neutron.

Answer 2

Answer:

$\huge\mathbb\fcolorbox{Purple}{pink}{⭐Answer⭐}$

4Be9+2He4→6C12+X

No. of protons are already balanced with C.

∴ X carries no charge.

and 9+4>12 by 1 unit mass.

∴ X carries one unit mass.

It's a neutron.