Physical Properties
How this element behaves in real-world conditions.
- State (25°C)
- Unknown
- Density
- 35 g/cm³
- Melting Point
- Not available
- Boiling Point
- Not available
Atomic Structure
Core identity and periodic table positioning.
Electromagnetic Properties
How this element attracts and exchanges electrons.
- Electronegativity
- Not available
- Ionization Energy
- Not available
- Electron Affinity
- Not available
- Metallic Character
- Metal
Hero / Identity Section
Core identity profile for Meitnerium with periodic placement and electron context.
- Element Name
- Meitnerium
- Symbol
- Mt
- Atomic Number
- 109
- Atomic Mass
- 278
- Group
- 9
- Period
- 7
- Block
- D
- Category
- Unknown
- Standard State
- Unknown
- Electron Configuration (Full)
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d7
- Electron Configuration (Noble Gas)
- [Rn] 7s2 5f14 6d7
- Valence Electrons
- 2 (d-block, variable in compounds)
Quick Facts Card (Table Layout)
Fast-reference values for physical and energetic properties.
Atomic Radius
Not available in current dataset
Ionic Radius
Not available in current dataset
Electronegativity (Pauling)
Not available in current dataset
1st Ionization Energy
Not available in current dataset
Electron Affinity
Not available in current dataset
Density
35 g/cm³
Melting Point
Not available in current dataset
Boiling Point
Not available in current dataset
Heat Capacity
Not available in current dataset
Thermal Conductivity
Not available in current dataset
Visual Components
Visual learning views for table position, shells, orbitals, and phase behavior.
Highlighted Position in Periodic Table Grid
Mt
Row 7, Column 9
Bohr Model Diagram
Mt
Educational shell model for electron arrangement.
Electron Shell Diagram
- K shell2
- L shell8
- M shell18
- N shell32
- O shell32
- P shell15
- Q shell2
Orbital Configuration Diagram
1s2/2
2s2/2
2p6/6
3s2/2
3p6/6
4s2/2
3d10/10
4p6/6
5s2/2
4d10/10
5p6/6
6s2/2
4f14/14
5d10/10
6p6/6
7s2/2
5f14/14
6d7/10
Phase Illustration
Unknown
State uncertain
Atomic Structure Section
Nuclear composition and electron shielding interpretation.
- Protons
- 109
- Neutrons (Most Abundant Isotope Estimate)
- 169
- Electrons
- 109
- Electron Configuration Breakdown
- 2 • 8 • 18 • 32 • 32 • 15 • 2
- Shielding Explanation
- Core electrons (~107) shield part of the nucleus, reducing attraction felt by outer electrons compared with the full nuclear charge.
- Effective Nuclear Charge (Estimate)
- 2
Chemical Properties Section
Category-guided chemistry behavior with periodic context for comparison.
- Common Oxidation States
- Not well established
- Reactivity Summary
- Insufficient experimental data; predictions rely on periodic trends and theory.
- Acid/Base Behavior
- Behavior is currently uncertain and model-dependent.
- Bonding Behavior
- Expected bonding patterns are inferred from periodic position.
- Typical Compounds
- Data limited; often theoretical or short-lived species
- Periodic Trend Comparison (Group Neighbors)
- Compared with Ir, this element is lower in the group and typically has a larger atomic size and lower ionization tendency.
Isotopes & Nuclear Data
Isotope stability and abundance notes for learning-oriented nuclear context.
- Stable Isotopes
- No fully stable isotopes are known for this element.
- Radioactive Isotopes
- All known isotopes are radioactive.
- Natural Abundance (%)
- Usually trace-level or synthetic; natural abundance is limited.
- Half-life (If Applicable)
- Half-life varies by isotope and should be checked from isotope-specific references.
- Nuclear Spin (Optional Advanced)
- Advanced isotope-level data is not included in the current core dataset.
- Most Abundant Isotope (Estimate)
- Mt-278
Applications & Uses
How this element appears in industry, biology, medicine, and technology.
- Industrial Uses
- No practical industrial use due to rarity/instability.
- Biological Role
- No known biological role.
- Medical Use
- No established routine medical use.
- Technological Relevance
- Primarily relevant to fundamental research.
- Environmental Impact
- Minimal direct impact due to extremely low quantities.
Safety & Handling
General hazard guidance for educational reference and lab awareness.
- Toxicity
- Hazard profile uncertain; conservative controls are recommended.
- Flammability
- Not established.
- Storage Considerations
- Handle under research protocols for unknown/high-hazard materials.
- Regulatory Classification
- Typically handled under specialized research and radiological regulations.