atomic number

The result is an element with atomic number two less than before.

There is therefore no use considering the atomic numbers of 118 and beyond.

As of 2010, elements with atomic numbers 1 to 118 have been observed.

Human technology has produced various additional elements beyond these first 98, with those through atomic number 118 now known.

This makes two completely different elements with smaller atomic numbers.

It has the chemical symbol He and atomic number 2.

But gold's place in the periodic table (and thus its atomic number) was known to be 79.

Even as of today, nearly a century later, we have driven the atomic number up to only a shaky 106.

The result of the emission is a new element with a lower atomic number.

An alternative definition of the effective atomic number is one quite different to that described above.