How do I create a table of fractions of numbers that are in scientific notation that suppresses the evaluation? I've tried using Hold and HoldForm but it always results in error.

particleclass = {10^-6, 10^-5, 10^-4, 10^-3, 10^-2, 10^-1};

alphaTESTwith = {5.261524149346547`*^-11, 5.261524149346548`*^-9, 
   5.261524149346547`*^-7, 0.000052615241493465474`, 
   0.005261524149346548`, 0.5261524149346547`};

alphaTESTwithout = {1.4251746149271436`*^-11, 
   1.4251746149271434`*^-10, 1.4251746149271435`*^-9, 
   1.4251746149271436`*^-8, 1.4251746149271436`*^-7, 
   1.4251746149271436`*^-6};

kappa = {1.32751827`*^8, 1.32751827`*^10, 1.32751827`*^12, 
   1.32751827`*^14, 1.3275182700000002`*^16, 1.32751827`*^18};

l = 1;

alphaKWith = Table[(alphaTESTwith*l)/kappa[[Mass]], {Mass, 1, 6}];
alphaKWithout = 
  Table[(alphaTESTwithout*l)/kappa[[Mass]], {Mass, 1, 6}];

gridWith = Grid[
  Insert[Transpose[
    Insert[Transpose[alphaKWith], N@particleclass, 1]]
   , Prepend[N@particleclass, "Table"], 1],
  Frame -> All]

gridWithout = Grid[
  Insert[Transpose[
    Insert[Transpose[alphaKWithout], N@particleclass, 1]]
   , Prepend[N@particleclass, "Table"], 1],
  Frame -> All]

Gives out