Periodicity Quiz

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#3-1 Paper 1 Difficulty: Easy

Which is the best answer for why atomic radius decreases as you go across the periodic table?

A. Electronegativity is decreasing.
B. The mass increases.
C. Ionization energy increases.
D. The atomic number increases.

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#3-2 Paper 2 Difficulty: Medium

This question is part of the Chemistry Online Revision Course
(but keep in mind that at least the first question of each topic is free!)

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