Trends in the Periodic Table
Chemistry ⇒ Atomic Structure and the Periodic Table
Trends in the Periodic Table starts at 9 and continues till grade 12.
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See sample questions for grade 12
Arrange the following elements in order of increasing atomic radius: F, Cl, Br.
Arrange the following ions in order of increasing size: O2−, F−, Na+, Mg2+.
Describe the trend in density of alkali metals as you move down the group.
Describe the trend in electron affinity as you move down Group 17 (halogens).
Explain the trend in reactivity of alkali metals as you move down the group.
Explain why atomic radius decreases across a period from left to right.
Explain why noble gases have very low chemical reactivity.
Explain why the atomic radius of transition metals does not decrease as much as that of main group elements across a period.
Explain why the first ionization energy of aluminum is lower than that of magnesium, even though aluminum is to the right of magnesium in the periodic table.
Which element in Period 3 has the highest first ionization energy?
Which group in the periodic table contains elements with the highest electron affinities?
