Unsur-unsur Golongan Iii A

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UNSUR-UNSUR GOLONGAN III A Presented by : Kelompok 5

Sifat sistem periodik unsur Atas

Kiri

kuadran I energi ionisasi elektronegativitas afinitas elektron oksidator asam oksi kanan

jari-jari logam basa reduktor ( kuadran III) Ket: sifat dikuadran I (harga keatas dan ke kanan semakin besar/bertambah) sifat dikuadran III (harga kekiri dan ke bawah semakin besar)

Macam macam unsur golongan IIIA     

Boron (B) Alumunium (Al) Galium (Ga) Indium (In) Talium (Tl)

logam

Sifat logam golongan IIIA Sifat titik leleh titik didih Elektron Jari-jari logam,pm Jari-jari ion,pm M+ M3Potensial elektrode, E°.V [M3+(aq)+ 3 e→M(p)] [M+(aq)+ e-→M(p)]

Al

Ga

In

Tl

660,4 2467 [Ne]3s33p3 143

29,8 2403 [Ar] 3d104s4p1 141

156,6 2080 [Kr]4d105s25 p1 166

303,5 1457 [Xe]4f145d106s26p1 171

50

113 62

-1,66 -

-0,56 -

132 81 -0,34 -0,25

140 95 +0,72 -0,34

BORON Unsur golongan III A yang bersifat non logam Ciri ciri:

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