The atomic mass of niobium is listed in the periodic table a…
The atomic mass of niobium is listed in the periodic table as 92.91. This means that: 1 – All niobium atoms weigh 92.91 daltons. 2 – The weighted average of the all the naturally occurring isotopes of niobium is 92.91. 3 – The most common isotope of niobium is probably niobium-92. 4 – The most common isotope of niobium is probably niobium-93.