Atomic and nuclear properties of materials:
Neutron (n)
Quantity
Value
Units
Value
Units
Atomic number
0
n
n
n
Mass
+/-
1.008 664 915 97
+/- 0.000 000 000 43
u
+/-
939.565 346
+/- 000.000 023
MeV
Nuclear density
mmm
few x 10
15
g cm
-3
n
n
Mass values from physics.nist.gov/cuu/Constants (2006)