Question

Complete each of the following nuclear equations by supplying the missing particle. Help chemPad X. Xº = =+ Greek Your answer contains one or more character substitutions. (a) 140 La – 2n + ?

can you pleae explain the 2 in front of the neutron. l'm a little confused about that and how it applies.

Answer 1

given - neutron emission ton - for Ex. if ca 17 N N + 1 na - çüs '31 13N+D Then : 140 La > 2 0 + 4020 L. - s 138 La

Simply if two neutrons emitting from atom ....the atomic mass get changed by two units because atomic mass is the addition of no. Of proton and no. Of neutrons.

But atomic no. Still the same because no. Of protons not changed....clear ??