The periodic table's layout means we can make predictions about elements based on their position on the periodic ... The first Group 1 element, lithium, has the highest melting point at 180 ...

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 ...

More than 40 years later, it was suggested that each element has a unique numbered position in the periodic ... position in the table, it was clear that element 87 would be a reactive alkali metal, ...