How many protons nuetrons and electrons are in 162Gd plus 3?

Gd is Gadolinium Which has:-

#1 ; Atomic No.(Z) 64

#2 ; Proton Number is 64

#3 ; Electron number is 64 in the neutrally charged atom .

However, the '+3' indicates that it is the Cation 'Gd^(3+). This means that it has ionised three electrons, hence the number of electrons in Gd^(3+) is 61.

Its Atomic Mass is 162 . This number is the sum total of all the protons and neutrons in the nucleus of the atom.

Hence the number of neutrons is 162 - 64 = 98 neutrons.

However, this isotope of Gadolinium is not stable. The most common stable isotope of Gd is [158/64]Gd.

NB Your 162Gd + 3 is questioned???as an unknown isotope of Gd.