The reason for the decrease in the atomic size of elements across a period is that

Assessment: WAEC SSCE - Chemistry - 2017 Subject: Chemistry

Question 1 Report

nuclear charge increases while the outermost electrons are drawn closer to the nucleus

nuclear charge decreases while the outermost electrons are drawn closer to the nucleus

valence electrons increase across the period while the valence shell remains constant

nuclear charge decreases while the distance of the valence shell from the nucleus is increasing

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