➤ Tantalum is characterized by high biological compatibility with tissue structures and is not accompanied by irritation and rejection reactions.

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➤ Ta₂O₅, (tantalum (V) oxide) - P-value 3.3%

➤ Thin plates are used in craniosurgery to close defects caused by traumatic brain injury.

➤ Included in the surgical material used to suture muscle tissue, tendon and nerve fibers, and blood vessels.

➤ Tantalum plates are used to build up the walls of the abdominal cavity.

➤ Ta walls are used for prosthetic eyeballs.

➤ The mixture of Ta₂O₅ + Fe₂O₃ leads to accelerated blood clotting.

➤ Widely used in the field of bone and plate surgery for osteosynthesis when applying an atypical "patch" in case of damage to the integrity of the skull vault.

➤ Causes irritation and development of diseases of the respiratory system, characterized by asthenic-vegetative syndrome.

➤ There is no specific antidote.

➤ Ta is a very heavy metal with a density of 16.6 g/cm3.

➤ Ta is strong, hard, ductile, and has high thermal conductivity;

➤ refractory - melting point 3000^oC,

➤ high chemical resistance - in H₂SO₄ at t = 200^oC;

➤ corrodes 0.006 ml per year.

➤ 5% of Ta is used in medicine.

➤ At 800^oC, tantalum can absorb 740 times its volume of gas.

➤ Tantalum forms only one oxide, Ta₂O₅.