Actinoids family (period 7) contain: Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lw.
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The elements in the mendelevium family include mendelevium (Md), fermium (Fm), and nobelium (No). They are all members of the actinide series in the Periodic Table.
Mendelevium belongs to the actinide family, also known as the actinoid family. This family of elements is located in the periodic table below the lanthanide series. Mendelevium is a synthetic element that is radioactive and is used in scientific research.
Oxygen is in the chalcogen family on the periodic table, also known as group 16. Other members of this family include sulfur, selenium, and tellurium.
The members of the carbon family in the periodic table are carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
Mendelevium has a half life of 51 days and is not a natural element but is in fact made as well as the fact that Mendelevium in large masses can be harmful to humans because it is a radioactive metal.
Mendelevium is a synthetic radioactive element, so it exists in a solid state at room temperature.