Tugas kimia

 

 Kerjakan soal kimia berikut ini:

   1.apa yang di maksud dengan prioda 

   2.apa yang di maksud dengan golongan 

   3.tentukan prioda dan golongan unsur berikut 

Berdasarkan konfigurasi elektron;

    a.   22sc

    b.   27co

    C.   38sr

    d.   33as


Jawaban ;  

1 . Bagian baris horizontal pada tabel priodik 

2. Berisi unsur - unsur yang memiliki susunan 

     elektron terluar yang sama 

3.  a. 22sc = 1s2 2s2 2p6 3s2 3p6 4s2 3d2 

     B. 27co =1s2 2s2 2p6 3s2 3p6 4s2 3d7 

     C. 38sr =1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2

     D. 33as =1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3


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