Suatu unsur terdapat pada periode ketiga dan dalam golongan IIA. Nomor atom unsur tersebut adalah….

sistem periodik unsur

Quiz
•
Chemistry
•
10th Grade
•
Easy
Hana Aziza Sayyidah
Used 5+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5
12
18
30
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara unsur-unsur berikut yang merupakan kelompok unsur logam alkali tanah adalah….
Li, Na, K, Rb
Be, Mg, Ca, Sr
Li, Be, B, C, N
Na, Mg, Sr, Ba
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur dengan nomor atom 37 dalam system periodic terletak pada....
Periode 5, golongan IA
Periode 5, golongan VIIA
Periode 5, golongan IB
Periode 1, golongan VA
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui beberapa unsur dengan konfigurasi elektron sebagai berikut:
P : 2 8 8 1
Q : 2 8
R : 2 8 2
S : 2 8 4
T : 2 7
Unsur yang mempunyai afinitas elektron terbesar adalah ….
P
Q
R
T
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dasar penyusunan sistem periodik Mendeleev adalah….
Kenaikan nomor atom dan kemiripan sifat
Kenaikan massa atom dan kemiripan sifat
Kenaikan massa atom relatif
Kemiripan sifat kimia
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kelompok unsur berikut yang semuanya bersifat logam yaitu . . . .
Emas, seng, dan Karbon
Fosfor, oksigen dan tembaga
Emas, perak dan natrium
Hidrogen, Nitrogen, dan karbon
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika unsur-unsur disusun berdasarkan kenaikan nomor massa atom, sifat unsur tersebut akan berulang pada unsur kedelapan. Pernyataan ini dikenal dengan hukum oktaf yang dikemukakan oleh . . . .
Dobereiner
Newlands
Mendeleyev
Moseley
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