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In addition, Moseley's laws allow us to calculate very accurately the wave-lengths of the X-ray spectral lines for any element in the periodic table, if those of the elements in its neighbourhood ...

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Study periodic trends and cover important topics like atomic size, ionisation energy, and electronegativity. Revise the classification of elements. Solve questions from your textbook and past papers.

How do we calculate mass and atomic numbers? VideoHow do we calculate mass and atomic numbers? This video is an interactive lesson in calculating an atom's mass and atomic number.

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