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 10
Arrange the following elements in order of increasing ionization energy: K, Na, Li.
As you move down a group in the periodic table, what happens to the atomic radius?
Context: Consider the elements magnesium (Mg), aluminum (Al), and silicon (Si) in period 3. Which has the highest electronegativity?
Describe the trend in electron affinity across a period from left to right.
Describe the trend in reactivity of alkali metals as you move down the group.
Explain why fluorine is more reactive than chlorine among the halogens.
Context: Consider the elements magnesium (Mg), aluminum (Al), and silicon (Si) in period 3. Which has the highest electronegativity?
Context: Consider the elements calcium (Ca), strontium (Sr), and barium (Ba) in Group 2. Which of these elements would react most vigorously with water, and why?
Which of the following best describes the trend in atomic radius across a period from left to right in the periodic table?
(1) Increases
(2) Decreases
(3) Remains the same
(4) First increases, then decreases
Which of the following best describes the trend in nonmetallic character across a period?
(1) Increases
(2) Decreases
(3) Remains the same
(4) First decreases, then increases
Which of the following best explains why atomic radius decreases across a period?
(1) Increase in number of shells
(2) Increase in nuclear charge
(3) Decrease in number of protons
(4) Decrease in electron shielding
Which of the following elements has the highest electronegativity?
(1) Sodium
(2) Chlorine
(3) Fluorine
(4) Oxygen
As you move from top to bottom in a group, the ionization energy generally __________.
Fill in the blank: The ability of an atom to lose electrons and form positive ions is called __________ character.
Fill in the blank: The elements in group 18 are known as __________.
Fill in the blank: The energy required to remove an electron from a gaseous atom is called __________ energy.
State whether the following statement is true or false: Electronegativity decreases down a group.
State whether the following statement is true or false: Metallic character increases from left to right across a period.
True or False: Ionization energy generally increases across a period from left to right.
True or False: Nonmetals are generally found on the left side of the periodic table.
