I need some helps on finding more elements that is used to make certain material?

For number 3, its phosphorus and its symbol is P. Number 4 is calcium, whose symbol is Ca. 7 is Thorium, and 8 is Zinc. Its symbol is Zn. 11 is Chlorine, symbol is Cl. 16 is tungsen, 14 is mercury,, its symbol is Hg. 17 is germanium, its symbol is Ge.