Periods and Groups in the Periodic Table
Chemistry ⇒ Atomic Structure and the Periodic Table
Periods and Groups in the Periodic Table starts at 8 and continues till grade 12.
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Describe the trend in electronegativity as you move across a period from left to right.
Describe the trend in metallic character as you move across a period from left to right.
Describe the trend in reactivity of halogens as you move down group 17.
Explain the difference between a group and a period in the periodic table.
Explain why elements in the same group have similar chemical properties.
Explain why the atomic radius increases as you move down a group.
Explain why the noble gases are chemically inert.
Given the following scenario: An unknown element X is found to have three electron shells and five valence electrons. Identify its group and period, and name a possible element.
Which group contains elements that are all gases at room temperature?
(1) Group 1
(2) Group 2
(3) Group 17
(4) Group 18
Which group contains the transition metals?
(1) Groups 1 and 2
(2) Groups 3 to 12
(3) Groups 13 to 18
(4) Group 18 only
Which group in the periodic table is known as the noble gases?
(1) Group 1
(2) Group 2
(3) Group 17
(4) Group 18
Which group is also known as the alkali metals?
(1) Group 1
(2) Group 2
(3) Group 13
(4) Group 17
As you move down a group in the periodic table, the ionization energy generally ________.
As you move from left to right across a period, the number of valence electrons ________.
As you move from top to bottom in a group, the atomic radius ________.
The element with atomic number 12 is found in period ________ and group ________.
Elements in the same group of the periodic table have similar chemical properties. True or False?
True or False: All elements in the same period have the same number of valence electrons.
True or False: Elements in the same period have the same number of electron shells.
True or False: The number of groups in the modern periodic table is 18.
