Mendeleev's Periodic Table > Y - Yttrium

Y - Yttrium

Although a period 5 transition metal, yttrium is associated with the rare earths. J. Gadolin discovered yttria mineral in 1794, proposing it as a new metal's oxide. A mixture of the reduced metals was obtained by Wöhler in 1828. In 1843 C. G. Mosander separated yttria into oxides of three metals, which were named yttrium, erbium and terbium, as they were found in a quarry near Ytterby, Sweden. Yttrium is used in color phosphors, lasers, ceramic superconductors and has been found in relatively high concentrations in lunar samples.

Atomic number	-	39		Density	g/mL	4	.5
Atomic weight	u	88	.9059	Melting point	K	1799
Bonding radius	A	1	.62	Boiling point	K	3611
Atomic radius	A	2	.27	Heat of vaporization	kJ/mol	363
Ionization Potential	V	6	.38	Heat of fusion	kJ/mol	11	.4
Electronegativity	-	1	.22	Specific heat	J/gK	0	.3
The oxide is a weak base.				Crystal are hexagonal.
Electron config. : [Kr] 4d¹ 5s²

Isotopes of Y (Yttrium):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	079 14.8 sec EC/ECp,7.100 Sr-79/Rb-78 78.937305	080 35 sec EC,9.100 MeV Sr-80 79.934299	081 70.4 sec EC,5.510 MeV Sr-81 80.929124	082 9.5 sec EC,7.820 MeV Sr-82 81.926795
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	083 7.08 min EC,4.470 MeV Sr-83 82.922350	084 4.6 sec EC,6.410 MeV Sr-84 83.920310	085 2.68 hr EC,3.250 MeV Sr-85 84.916424	086 14.74 hr EC,5.240 MeV Sr-86 85.914890
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	087 79.8 hr EC,1.862 MeV Sr-87 86.910877	088 106.65 da EC,3.623 MeV Sr-88 87.909505	089 100% Stable 88.905847	090 64.10 hr B-,2.282 MeV Zr-90 89.907152
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	091 58.51 da B-,1.544 MeV Zr-91 90.907300	091a 49.71 min B-,2.100 MeV Zr-91 90.907897	092 3.54 hr B-,3.639 MeV Zr-92 91.908947	093 10.18 hr B-,2.893 MeV Zr-93 92.909581
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	094 18.7 min B-,4.919 MeV Zr-94 93.911595	095 10.3 min B-,4.420 MeV Zr-95 94.912786	096 5.34 sec B-,7.087 MeV Zr-96 95.915882	097 3.75 sec B-/B-n,6.688 Zr-97/Zr-96 96.918129
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	097a 142 msec B-,10.211 MeV Zr-97 96.921911	098 0.548 sec B-/B-n,8.830 Zr-98/Zr-97 97.922236	099 1.470 sec B-/B-n,7.567 Zr-99/Zr-98 98.924632	100 735 msec B-/B-n,9.310 Zr-100/Zr-99 99.927750
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	100a 0.94 sec B-,9.310 MeV Zr-100 99.927750	101 448 msec B-/B-n,8.550 Zr-101/Zr-100 100.93031	102 0.30 sec B-,9.850 MeV Zr-102 101.93355	104 150 nsec B-,11.800 MeV Zr-104 103.94149

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