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Copy of Unsur Dalam Kala

Bab 4 - Jadual Berkala Unsur Kala 3
by

Nur Zahira

on 2 May 2013

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Transcript of Copy of Unsur Dalam Kala

Jadual Berkala Unsur Unsur Dalam Kala Apabila merentasi Kala 3 Unsur-unsur pada
Kala 3 nombor proton bertambah 1

mempunyai 3 petala

bilangan valens elektron bertambah (1-8)


Sambungan... pepejal (kecuali Cl & Ar - gas)

jejari dan saiz atom semakin berkurangan

elektronegatifan unsur semakin bertambah Sifat asid dan sifat bes sesuatu oksida *amfoterik = bersifat asid dan bes Kegunaan separuh logam
dalam Industri metaloid - konduktor elektrik lemah

Silikon dan germanium digunakan sebagai semikonduktor

Semikonduktor digunakan untuk membuat diod dan transistor. Sambungan... Transistor dan diod - iPad, iPhone, televisyen, kalkulator dan sebagainya.

Silikon dan germanium - melayari internet & menonton televisyen. Apakah yang akan terjadi kepada kehidupan kita tanpa kewujudan pelbagai unsur dan sebatian? Silicon Germanium
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