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Home / Newton Desk / Meitnerium Mt (Element 109) of Periodic Table
Meitnerium Mt (Element 109) of Periodic Table

Meitnerium Mt (Element 109) of Periodic Table

109 Mt (Meitnerium)

Mass number – 278

Atomic number (Z) – 109

Atomic weight – 268 g/mol

Electrons: 109

Protons: 109

Neutrons: 169

Group – 9

Period – 7

Block – d

Element category – Transition metal

Appearance – Highly radioactive metal

Half Life(s) – 1800

Lifetime (s) – 2600

Electron per shell – K2, L8, M18, N32, O32, P15, Q2

Electron configuration – 1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f146d77s2

Phase – solid

Density – 37.4 g/cm3

Oxidation states – 9, 8, 6, 4, 3, 1

Ionization energies – 1st: 800.8 kJ/mol, 2nd: 1823.6 kJ/mol, 3rd: 2904.2 kJ/mol

Atomic radius – 128 pm

Covalent radius – 129

Crystal structure – Face-centered cubic

Magnetic ordering – Paramagnetic

CAS Number – 54038-01-6

Naming – After Lise Meitner

Discovery – GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany (1982)

Isotopes – 282Mt 278mt 276Mt 274Mt

Uses – At present it is only used in research.

Natural abundance – It is made by bombarding bismuth with iron atoms

#Meitnerium

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