
bilangan kuantum
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Chemistry
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10th Grade
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12 Slides • 4 Questions
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Bilangan Kuantum
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Tujuan ...
Bisa menentukan bilangan kuantum suatu elektron
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serangkaian bilangan yang digunakan dalam model atom mekanika kuantum untuk menjelaskan posisi dan sifat elektron dalam atom, termasuk tingkat energi, bentuk orbital, orientasi orbital, dan spin elektron.
Apa itu bilangan kuantum ?
Terdapat empat jenis bilangan kuantum:
bilangan kuantum utama (n),
bilangan kuantum azimut (ℓ),
bilangan kuantum magnetik (m),
bilangan kuantum spin (s).
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4 bilangan kuantum
Bilangan Kuantum Utama (n)
Fungsi: Menentukan tingkat energi utama dan ukuran orbital elektron, atau jarak elektron dari inti atom.
Nilai: Bilangan bulat positif, seperti 1, 2, 3, dan seterusnya.
Bilangan Kuantum Azimut (ℓ)
Fungsi: Menggambarkan bentuk orbital elektron (atau subkulit).
Nilai: Bilangan bulat yang dimulai dari 0, 1, 2, 3, 4, dan seterusnya, hingga n-1.
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Bilangan Kuantum Magnetik (m)
Fungsi: Menunjukkan orientasi orbital di dalam ruang tiga dimensi.
Nilai: Ditentukan oleh nilai bilangan kuantum azimut (ℓ) dan berbentuk
bilangan bulat dalam rentang tertentu, seperti -(ℓ) hingga +(ℓ). 4.
Bilangan Kuantum Spin (s)
Fungsi: Menjelaskan arah putaran elektron (spin) pada porosnya. Nilai: Hanya memiliki dua nilai, yaitu +1/2 (spin ke atas) dan -1/2 (spin ke bawah).
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Multiple Choice
Atom C mempunyai konfigurasi elektron seperti di atas, bilangan kuantum s (spin) adalah...
+1/2
-1/2
1
0
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Multiple Choice
Harga 4 bilangan kuantum elektron terakhir dari 20Ca adalah...
n = 4; l = 1; m = 0; s = 1/2
n = 3; l = 1; m = +1; s = -1/2
n = 3; l = 0; m = 0; s = -1/2
n = 4; l = 0; m = 0; s = -1/2
n = 4; l = 0; m = 0; s = +1/2
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Multiple Choice
Tentukan keempat bilangan kuantum elektron terakhir pada unsur dengan nomor atom 25.
n=4, l=0, m=0, s=−21
n=3, l=2, m=+2, s=+21
n=3, l=1, m=+1, s=+21
n=3, l=2, m=−2, s=−21
n=3, l=2, m=0, s=−21
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Multiple Choice
Orbital d memiliki bilangan kuantum magnetik....
-1, 0, +1
+2, +1, 0, -1, -2
+2, +2, -1, +1
+2, +1, 0, +1, -2
-1, -2, 0, +1, +3
Bilangan Kuantum
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