
Evaluasi Sistem Periodik Unsur
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Easy
Vinny marten
Used 1+ times
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5 questions
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1.
FLASHCARD QUESTION
Front
Ilmuwan yang pertama kali mengelompokkan unsur-unsur berdasarkan kemiripan sifat yang berulang setiap delapan unsur adalah...
Back
Newlands
Answer explanation
Newlands menunjukkan bahwa unsur-unsur disusun berdasarkan kenaikan massa atomnya, maka sifat unsur tersebut akan berulang setelah unsur ke delapan. Kecenderungan ini disebut Oktaf Newlands, karena satu kelompok unsur banyaknya sama dengan satu oktaf.
2.
FLASHCARD QUESTION
Front
Berdasarkan perkembangan sistem periodik oleh Doberainer, kelompok unsur yang membentuk triade adalah...
Back
Li, Na, dan K
Answer explanation
Unsur-unsur dalam satu triad disusun menurut kenaikan massa atom relatifnya. Dimana berdasarkan aturannya, massa atom relatif unsur kedua merupakan rata-rata massa atom relatif dari unsur pertama dan ketiga.
Li=7, K=39, Na=23
3.
FLASHCARD QUESTION
Front
Konfigurasi unsur X: Unsur X terletak pada...
Back
Periode 3, Golongan VIIIA
Answer explanation
4.
FLASHCARD QUESTION
Front
Unsur X terletak pada golongan IVA periode 5 dalam sistem periodik. Berapakah nomor atom unsur tersebut?
Back
50
Answer explanation
5.
FLASHCARD QUESTION
Front
Perhatikan keempat bilangan kuantum suatu unsur di bawah ini: n=3, l=2, m=1, s=+1/2 Maka dalam sistem periodik terletak pada...
Back
Periode 4, Golongan VIB
Answer explanation
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