Gd

Gadolinium · element 64

Lanthanide · Solid at room temperature

Gadolinium is a chemical element with symbol Gd and atomic number 64. It is a silvery-white, malleable and ductile rare-earth metal. It is found in nature only in combined (salt) form.

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Pure (99.95%) Amorphous Gadolinium, about 12 grams, 2 × 1.5 × 0.5 cm, cast in acrylic glass
Pure (99.95%) Amorphous Gadolinium, about 12 grams, 2 × 1.5 × 0.5 cm, cast in acrylic glass - Jurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/gadolinium.php

Key facts

Atomic mass
157.253 u
how heavy one atom is
Phase (room temp.)
Solid
Density
7.9 g/cm³
how tightly packed it is
Melting point
1585 K (1312 °C)
when solid turns to liquid
Boiling point
3273 K (3000 °C)
when liquid turns to gas
Period
6
its row in the periodic table
Group
3
its column in the periodic table
Block
F-block
the neighbourhood it lives in
Electronegativity
1.2
how strongly it pulls electrons
Electron configuration
[Xe] 4f7 5d1 6s2
where its electrons live
Shells
2 · 8 · 18 · 25 · 9 · 2
electrons in each layer, inside to out
Discovered by
Jean Charles Galissard de Marignac
who found it
Appearance
silvery white
what it looks like

Source: Wikipedia

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