Mots Croisés Atomic modelsVersion en ligne Atomic models par María Ángeles López 1 He was the first one in talking about atomic nucleus. 2 Atomic particle with negative charge. 3 Atoms of the same element with the same atomic number and different mass number. 4 He proposed the plum pudding model of the atom. 5 Region of the atom where electron is likely to be. 6 Atomic particle without charge. 7 Atomic particle with positive charge. 8 He was the first one in talking about energy levels. 8 2 5 4 6 1 7
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