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Copy of Kumpulan 17

Bab 4 - Jadual Berkala Unsur
by

Nur Zahira

on 2 May 2013

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Transcript of Copy of Kumpulan 17

Kumpulan 17 Jadual Berkala Unsur Sifat Fizik Sifat Kimia Langkah Keselamatan Sifat Fizik Takat Lebur dan Takat Didih Rendah

-Molekul-molekul ditarik oleh daya yang lemah Sifat Fizik Menuruni Kumpulan

gas -> cecair -> pepejal

pada suhu bilik Sifat Fizik - Fluorin - gas kuning muda


- Klorin - gas kuning kehijauan

Sifat Fizik - Bromin - cecair perang kemerahan


- Iodin - pepejal hitam keunguan Sifat Fizik - Takat lebur/ takat didih meningkat.

- Ketumpatan meningkat. Tindakbalas dengan Air menghasilkan dua jenis asid Fluorin - reaktif
Astatin - radioaktif

Tidak boleh digunakan dalam makmal sekolah. Gas fluorin, gas klorin, wap bromin dan wap iodin adalah beracun

Kendalikan dalam kebuk wasap. Tindakbalas dengan Ferum panas menghasilkan ferum (III) halida Tindakbalas dengan Larutan NaOH membantuk natrium halida, natrium halat (I), dan air Tindakbalas Halogen mempunyai 7 valens elektron
saiz atom bertambah - kereaktifan berkurangan.
Full transcript