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 11
Describe the trend in electronegativity as you move down a group.
Describe the trend in metallic character as you move across a period from left to right.
Explain the trend in electron affinity across a period.
Explain why alkali metals are highly reactive.
Explain why cations are smaller than their parent atoms.
Explain why noble gases have very low chemical reactivity.
Explain why the atomic radius decreases as you move from left to right across a period.
Which element in Period 3 has the smallest atomic radius?
Which group in the periodic table contains the most reactive nonmetals?
Arrange the following elements in order of increasing second ionization energy: Na, Mg, Al. Justify your answer.
Consider the following scenario: An unknown element X is found to have a much higher third ionization energy compared to its first and second ionization energies. What can you infer about the group to which element X belongs?
Explain why the atomic radius of transition metals changes very little across a period compared to main group elements.
Explain, using the concept of effective nuclear charge, why the atomic radius of elements decreases across a period even though the number of electrons increases.
State and explain the trend in the melting points of alkali metals as you move down Group 1.
