1-special nuclear:
saying to the one nuclear with given the numbers of the protons and neutrons.

2-isotope:
one nuclear with equal protons and different neutrons.

3- isotone:
one nuclear has equal neutrons and different protons.

4-isomer:
one nuclear with excites mode and with measuring able half life.

5-isobar:
one nuclear with mass number equal.  A=N+Z

6-nucleon:
 prtons and neutrons at the nucleon.

7-meson:
particles are with between mass protons and electrons. The most important are m and p.
8-positron
:positive electron with equal mass.
9-photon:
particle light smallest.
10-heavy water:
this water has two heavy  hydrogen atom. D2O
11-spin:
turn particle to round self.
12- neutrino:neutrino become free with electron and positron. this is very little particle.13- half life:
time span element's activity become half.
14- rest mass:
mass particles that their velocity is zero or become zero.