Chemical Elements.com - Gadolinium (Gd)

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Basic Information

Name: Gadolinium
Symbol: Gd
Atomic Number: 64
Atomic Mass: 157.25 amu
Melting Point: 1311.0 °C (1584.15 K, 2391.8 °F)
Boiling Point: 3233.0 °C (3506.15 K, 5851.4 °F)
Number of Protons/Electrons: 64
Number of Neutrons: 93
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 7.895 g/cm³
Color: Silverish

Atomic Structure

Number of Energy Levels: 6

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Isotopes

Isotope	Half Life
Gd-148	75.0 years
Gd-150	1800000.0 years
Gd-151	124.0 days
Gd-152	1.1E11 years
Gd-153	241.6 days
Gd-154	Stable
Gd-155	Stable
Gd-156	Stable
Gd-157	Stable
Gd-158	Stable
Gd-159	18.6 hours
Gd-160	Stable
Gd-162	8.4 minutes

Facts

Date of Discovery: 1880
Discoverer: Jean de Marignac
Name Origin: gadolinite (mineral)
Uses: magnetic
Obtained From: gadolinite

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