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Discovery and structural models of atomic particles

1.	Introduction to structure of the atom
2.	Atomic structure: Thomson's Model
3.	Atomic structure: Rutherford's Model
4.	Bohr's Model and Electron distribution or Electronic configuration
5.	Valence electrons
6.	Valency and bond formation
7.	Atomic number and Mass number
8.	Isotops and their applications
9.	Isobars and isotones

1.	Discovery of structure of the atom Difficulty: easy	2
2.	Discovery of subatomic particles Difficulty: easy	3
3.	Atomic number Difficulty: easy	3
4.	Subatomic particle Difficulty: easy	3
5.	Thomson and Rutherford models Difficulty: easy	3
6.	Atomic masses calculation Difficulty: easy	3
7.	Atoms and subatomic particles Difficulty: medium	3
8.	Bohr's atomic model Difficulty: medium	3
9.	Calculate the number of electrons and protons I Difficulty: medium	2
10.	Calculate the number of electrons and protons II Difficulty: medium	3
11.	Subatomic particles Difficulty: medium	3
12.	Electronic configuration of elements Difficulty: medium	2
13.	Find the number of electrons in ions Difficulty: medium	4
14.	Gain and loss of electron(s) Difficulty: hard	2
15.	Isotopes and isobars Difficulty: hard	2
16.	Electron distribution in elements Difficulty: hard	6
17.	Valency of elements or atoms Difficulty: hard	6

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Methodical recommendation

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