Elektron terakhir dari atom X memiliki empat bilangan kuantum sebagai berikut :
n = 4, l = 0, m = 0 , s = + ½
Nomor atom X adalah . . . .
Struktur Atom (Test-2)
Quiz
•
Chemistry
•
11th Grade
•
Hard
Renovausi Rusung
Used 4+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Elektron terakhir dari atom X memiliki empat bilangan kuantum sebagai berikut :
n = 4, l = 0, m = 0 , s = + ½
Nomor atom X adalah . . . .
19
20
28
37
56
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Konfigurasi electron yang tepat utuk 29Cu adalah . . . .
[Ar] 3d9 4s2
[Ar] 3d10 4s1
[Ar] 4d9 5s2
[Kr] 4d9 5s1
[Kr] 4d10 5s1
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Jika dketahui Fe memiliki nomor atom 26 dan massa atomnya 56, konfigurasi electron ion Fe+3 adalah . . . .
[Ar] 4s2 3d8
[Ar] 4s2 3d3
[Ar] 4s1 3d9
[Ar] 3d8
[Ar] 4s2 3d5
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jumlah electron tidak berpasangan pada atom 42Mo adalah . . . .
4
5
6
7
8
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Ion yang dapat dibentuk oleh unsur X yang memiliki nomor atom 56 dan nomor massa 137 adalah . . . . .
X2-
X2+
X3+
X3-
X4+
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Ion X3+ memiliki konfigurasi electron 1s2 2s2 2p6. Nilai keempat bilangan kuantum electron terakhir dari atom X adalah . . . .
n = 3, l = 1, m = – 1 , s = + ½
n = 3, l = 1, m = + 1 , s = + ½
n = 3, l = 1, m = 0 , s = + ½
n = 2, l = 1, m = +1 , s = +½
n = 2, l = 1, m = -1, s = – ½
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Di antara sifat periodik unsur berikut, yang benar dalam satu golongan dari atas ke bawah adalah. . . .
jari – jari atom makin pendek
elektronegativitas makin besar
energi ionisasi makin besar
afinitas elektron makin kecil
sifat logam makin berkurang
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