Lawrensium

103 nobeliumlawrenciumrutherfordium
Lu

Lr

(Upt)
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom lawrencium, Lr, 103
Dhèrèt kimia transition metals
Golongan, Periode, Blok n/a, 7, d
Rupa unknown, probably silvery
white or metallic gray
Massa atom [262] g/mol
Konfigurasi elektron [Rn] 5f14 6d1 7s2
Cacahing èlèktron saben kulit 2, 8, 18, 32, 32, 9, 2
Ciri-ciri fisik
Fase presumably a solid
Titik lebur - K
(- °C, - °F)
Ciri-ciri atom
Bilangan oksidasi 3
Elektronegativitas - (skala Pauling)
Energi ionisasi pertama: 443.8 kJ/mol
ke-2: 1428.0 kJ/mol
ke-3: 2219.1 kJ/mol
Lain-lain
Nomor CAS 22537-19-5
Isotop
iso NA waktu paruh DM DE (MeV) DP
262Lr syn 3.6 h EC 262No
261Lr syn 44 m SF/EC?
260Lr syn 2.7 m alpha 8.04 256Md
259Lr syn 6.2 s 78% alpha 8.44 255Md
22% SF
258Lr syn 4.1 s alpha 8.68,8.65,8.62,8.59 254Md
257Lr syn 0.65 s alpha 8.86,8.80 253Md
256Lr syn 27 s alpha 8.62,8.52,8.32... 252Md
255Lr syn 21.5 s alpha 8.43,8.37 251Md
254Lr syn 13 s 78% alpha 8.46,8.41 250Md
22% EC 254No
253Lrm syn 0.57 s alpha 8.79 249Md
253Lrg syn 1.49 s 92% alpha 8.72 249Md
8% SF
252Lr syn 0.36 s alpha 9.02,8.97 248Md
Referensi

Lawrencium (uniné /ləˈrɛnsiəm/) iku èlemèn sintètis radioaktif kanthi simbul Lr (biyèn Lw) lan nomer atom 103.


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