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.
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?
As you move down a group in the periodic table, the ionization energy generally:
(1) Increases
(2) Decreases
(3) Remains the same
(4) First increases then decreases
As you move from top to bottom in a group, the shielding effect:
(1) Increases
(2) Decreases
(3) Remains the same
(4) First increases then decreases
Which of the following correctly lists the elements in order of increasing atomic radius?
(1) F < O < N < C
(2) C < N < O < F
(3) F < N < O < C
(4) O < F < C < N
Which of the following elements has the greatest metallic character?
(1) Aluminum (Al)
(2) Silicon (Si)
(3) Phosphorus (P)
(4) Sulfur (S)
The ability of an atom to lose electrons and form positive ions is called __________ character.
The element with the highest first ionization energy in Period 2 is __________.
The energy required to remove an electron from a gaseous atom is called __________.
The most metallic element in Period 2 is __________.
State whether the following statement is true or false: Nonmetals tend to have higher ionization energies than metals.
State whether the following statement is true or false: The atomic radius of an anion is larger than that of its parent atom.
State whether the following statement is true or false: The noble gases have the highest electronegativity values in their respective periods.
True or False: Ionization energy generally increases across a period from left to right.
