Question

A certain particle X has 17 proton,17 electron and 18 neutron. Find the atomic number and mass number of X

Answer 1

a certain particle X has17 proton ,17 electron and 18 neutron .....now the automatic nmbr is 17 because atomic nmbr = nmbr of proton ....
and mass nmbr of X is proton + neutron
= 17+18=35