3ESO Structure of Matter.

1. For the Species   
   
    indicate the number of electrons,
   
   neutron, protons.
2. We have 3 different atoms: a)Z=2; b)Z=7; c)Z=11. Write their electrónic configuration, period, Group, aggregation state, stable ions, stoichiometry of the compound b-c
3. Tell which type of radioactive emmission: a)is formed by electrons b)is most penetrating c)is formed by heaviest particles