\((\because \lambda = 5894\,\mathop A\limits^o \) અથવા \(5894 \times 10^{-10}\,m)\)
\(m\,\, = \,\,\frac{{6.652 \times {{10}^{ - 34}}}}{{3 \times {{10}^{ - 8}} \times 5894 \times {{10}^{ - 10}}}}\) અથવા
\(\frac{{6.652}}{{17682}} \times {10^{ - 32}}\,\,\, = \,\,\,0.0003746 \times {10^{ - 32}}\,\,\) અથવા
\(3.746 \times {10^{ - 36}}\,Kg\)
[ઉપયોગ: $\left.{h}=6.63 \times 10^{-34}\, {Js}, {m}_{{e}}=9.0 \times 10^{-31}\, {~kg}\right]$
$O ^{2-}, F ^{-}, Al , Mg ^{2+}, Na ^{+}, O ^{+}, Mg , Al ^{3+}, F$