Question

how to find the name of element, electronic configuration, atomic number, atomic mass, valency, valance electrons, number of protons,number of electrons and number of neutrons, metal, non-metal, metalloid.

Answer 1

you can find all these details by using the modern periodic table which helps classify elements into all the categories you need, but you atleast have to know either the name,or atomic number,or atomic mass,or number of protons(atomic number),or number of neutron.