rather than its atomic mass. Here are some popular mnemonics to help you remember the first 20 elements of the periodic table: H - Hydrogen He - Helium Li - Lithium Be - Beryllium ...

Beryllium was to play a historic role in advancing our knowledge of atomic theory since it helped uncover the fundamental particle ... He observed that it then emitted a new kind of subatomic particle ...

But why beryllium, the number four element in the periodic table? There are several reasons for this, explains Dickopf, one of which is: "It has a small atomic nucleus, which is why certain ...