Input interpretation
manganese (chemical element) | sodium (chemical element)
Basic elemental properties
| manganese | sodium
symbol | Mn | Na
atomic number | 25 | 11
atomic mass | 54.938044 u | 22.98976928 u
half-life | (stable) | (stable)
Thermodynamic properties
| manganese | sodium
phase at STP | solid | solid
melting point | 1246 °C | 97.72 °C
boiling point | 2061 °C | 883 °C
(properties at standard conditions)
Material properties
| manganese | sodium
density | 7.47 g/cm^3 | 0.968 g/cm^3
Mohs hardness | 6 (~~ microcline) | 0.5 (between talc and gypsum)
Young’s modulus | 198 GPa | 10 GPa
tensile yield strength | 241 MPa |
sound speed | 5150 m/s | 3200 m/s
thermal expansion | 2.17×10^-5 K^(-1) | 7.1×10^-5 K^(-1)
thermal conductivity | 7.8 W/(m K) | 140 W/(m K)
(properties at standard conditions)
Electromagnetic properties
| manganese | sodium
electrical type | conductor | conductor
resistivity | 1.6×10^-6 Omega m (ohm meters) | 4.7×10^-8 Omega m (ohm meters)
magnetic type | paramagnetic | paramagnetic
color | (silver) | (silver)
Reactivity
| manganese | sodium
valence | 4 | 1
electronegativity | 1.55 | 0.93
electron affinity | 0 kJ/mol (kilojoules per mole) | 52.8 kJ/mol (kilojoules per mole)
first ionization energy | 717.3 kJ/mol (kilojoules per mole) | 495.8 kJ/mol (kilojoules per mole)
Atomic properties
| manganese | sodium
term symbol | ^6S_(5/2) | ^2S_(1/2)
atomic radius | 140 pm | 180 pm
(electronic ground state properties)
Abundances
| manganese | sodium
universe abundance | 8×10^-4 mass% | 0.002 mass%
crust abundance | 0.11 mass% | 2.3 mass%
human abundance | 2×10^-5 mass% | 0.14 mass%
Nuclear properties
| manganese | sodium
half-life | (stable) | (stable)
stable isotopes | Mn-55 (100%) | Na-23 (100%)
unstable isotopes | Mn-53 (3.8 Myr) | … | Na-22 (2.6027 yr) | …
Identifiers
| manganese | sodium
CAS number | 7439-96-5 | 7440-23-5
PubChem CID number | 23930 | 5360545