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struktur atom & tabel periodik unsur

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Kimia X SMA 9Tugas Individu1. Jelaskan kelemahan model <strong>atom</strong> Rutherford!2. Bagaimana Niels Bohr mengatasi kelemahan model <strong>atom</strong> Rutherford?3. Dewasa ini model <strong>atom</strong> yang diterima para ahli adalah model <strong>atom</strong> mekanika kuantum.Apakah model <strong>atom</strong> mekanika kuantum ini sudah sempurna? Masih mungkinkah adamodel <strong>atom</strong> yang lebih sempurna?Latihan 1.11. Salin dan lengkapilah daftar berikut dengan jawaban singkat!Teori Atom Dasar Isi KelemahanDalton ........................... .............................. ..............................Thompson ........................... .............................. ..............................Rutherford ........................... .............................. ..............................Niels Bohr ........................... .............................. ..............................2. Tulislah konfigurasi elektron, dan tentukan elektron valensi dari <strong>unsur</strong>-<strong>unsur</strong> berikut!UnsurNomor AtomNatrium 11Litium 3Kalium 19Belerang 16Argon 18Arsen 33Kripton 36Barium 56Bismut 83Fransium 87Konfigurasi ElektronK L M N OElektron Valensi..... ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .................................................. ..... ..... ..... ..... .............................................

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