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Mendelevium (Md)

Element with atomic number 101, category: Actinide, a solid at room temperature.

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Element 101 of 118

Actinide

Md

Mendelevium

Group 15, Period 7 (actinide series)

Atomic Number
101
Atomic Mass
258 u
State at Room Temperature
Solid

Common Uses

Research

Electron Diagram

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About Mendelevium

Mendelevium is a chemical element with the symbol Md and atomic number 101, meaning every atom has 101 protons in its nucleus. It is classed as Actinide and is a solid at room temperature. Its atomic mass is about 258 atomic mass units (u).

On the periodic table, Mendelevium sits in group 15, period 7 (actinide series), which determines how many electron shells it has and how it tends to react with other elements.

Uses of Mendelevium

In daily life and industry, Mendelevium is used for Research. These uses are closely tied to the typical properties of elements in the Actinide category.

Electron Structure of Mendelevium

Using a simplified electron shell model (at most 2 electrons in the first shell, 8 in the second, 18 in the third, and so on), Mendelevium has 6 electron shells, with an approximate arrangement of 2, 8, 18, 32, 32, 9 electrons from the innermost shell to the outermost. This is a simplified learning model, not the full electron configuration that accounts for the s, p, d and f subshells.

Explore Other Elements

Want to see another element or try the element symbol quiz? Go back to the Interactive Periodic Table to explore all 118 chemical elements.

Frequently Asked Questions

The chemical symbol of Mendelevium is Md, with atomic number 101 and an atomic mass of about 258 u.
Mendelevium is in the Actinide category and is a solid at room temperature.
Mendelevium is in group 15, period 7 (actinide series) of the periodic table.
Mendelevium is commonly used for Research.
Using the simplified Bohr model, Mendelevium has 6 electron shells, with an approximate arrangement of 2, 8, 18, 32, 32, 9 electrons from the innermost shell to the outermost.