
SPU
Authored by Evi Lutfia
Chemistry
University
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bagi unsur dengan konfigurasi elektron
1s2 2s2 2p6 3s2 3p6 3d5 4s2
berlaku pernyataan bahwa unsur tersebut...
1.Mempunyai nomor atom 25
2.Terletak pada periode 3
3.Mempunyai 5 elektron tidak berpasangan
4.Termasuk golongan alkali tanah
1 dan 2
1 dan 3
2 dan 3
2 dan 4
3 dan 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pasangan nomor atom, konfigurasi elektron, golongan, dan periode dalam tabel berikut yang benar adalah …
(Nomor atom: Ne = 10, Ar = 18, Kr = 36)
a
b
c
d
e
3.
MULTIPLE CHOICE QUESTION
2 mins • 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
Dalton
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kelemahan tabel periodik yang dikemukakan oleh mendeleyev adalah . . . .
Pengelompokan unsur-unsur hanya berlaku untuk unsur-unsur dengan massa atom relatif rendah
Kemiripan alat unsur tidak hanya berlaku pada tiga unsur yang berada dalam setiap kelompok
Penempatan unsur tidak sesuai dengan kenaikan massa atom relatifnya
Menempatkan unsur-unsur berdasarkan kenaikan nomor atom dalam periode
Pengelompokan unsur-unsur hanya sesuai untuk unsur-unsur ringan
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kelompok unsur yang membentuk triade yaitu . . . .
Li, Na, dan K
Li, Ca, dan S
S, Cl, dan Mn
Sr, Se, dan Br
K, Ba dan Te
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada sistem periodik modern unsur-unsur yang berada dalam satu periode disusun berdasarkan . . . .
Kemiripan sifat
Jumlah elektron valensi
Kenaikan nomor massa
Jumlah kulit atom
Kenaikan nomor atom
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur-unsur H, Li dan Na yang terletak dalam golongan IA ditentukan berdasarkan . . . .
Nomor atom
Jumlah kulit
Nomor massa
Jumlah elektron
Elektron valensi
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