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Questions and Answers
In the modern periodic table, elements are listed by increasing _________.
In the modern periodic table, elements are listed by increasing _________.
atomic number
Each box represents an _________.
Each box represents an _________.
element
A box contains the name, atomic number, _________ and _________ for the element.
A box contains the name, atomic number, _________ and _________ for the element.
symbol, atomic mass
Vertical columns in the table are called _________.
Vertical columns in the table are called _________.
Most elements in a column have the same number of ________ in the outer energy level and tend to have similar _________.
Most elements in a column have the same number of ________ in the outer energy level and tend to have similar _________.
Horizontal rows in the table are called _________.
Horizontal rows in the table are called _________.
The elements on the left side of the table are _______.
The elements on the left side of the table are _______.
Groups 3-12 contain metals known as _____________.
Groups 3-12 contain metals known as _____________.
Elements on the right side are ________.
Elements on the right side are ________.
List two types of information from a periodic table.
List two types of information from a periodic table.
Where are metals located on the periodic table?
Where are metals located on the periodic table?
Where are nonmetals located on the periodic table?
Where are nonmetals located on the periodic table?
What are the elements in Groups 3 through 12 called?
What are the elements in Groups 3 through 12 called?
What are the elements called that are next to the stairstep-shaped line on the right side of the table?
What are the elements called that are next to the stairstep-shaped line on the right side of the table?
What do we call the letter or letters that represent an element?
What do we call the letter or letters that represent an element?
How many elements are included in the modern periodic table?
How many elements are included in the modern periodic table?
What name is given to the elements in Group 18?
What name is given to the elements in Group 18?
How is the element's period related to the number of energy levels over which its electrons are spread?
How is the element's period related to the number of energy levels over which its electrons are spread?
How can you predict an element's group and period?
How can you predict an element's group and period?
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Study Notes
The Periodic Table Overview
- Elements are organized by increasing atomic number in the modern periodic table.
- Each box in the periodic table represents a distinct element.
- Information within each box includes the element's name, atomic number, symbol, and atomic mass.
Structure of the Periodic Table
- Vertical columns, or families, categorize elements with similar outer electron counts.
- Most elements in a column share the same number of valence electrons and exhibit similar properties.
- Horizontal rows are referred to as periods, indicating the sequence from left to right.
Classification of Elements
- The left side of the periodic table consists predominantly of metals.
- Between Groups 3 and 12, transition elements represent a subgroup of metals.
- The right side contains nonmetals, which display different chemical properties compared to metals.
Location of Specific Elements
- Metals are located to the left of the staircase line, whereas nonmetals are to the right.
- Elements adjacent to the stairstep line are classified as metalloids, exhibiting properties of both metals and nonmetals.
Element Identification
- Each element is identified by a chemical symbol, which consists of one or more letters.
- The periodic table includes a total of 118 elements, including 115 recognized and three with blank spaces.
Group and Period Characteristics
- Elements in Group 18 are known as noble gases, recognized for their lack of reactivity.
- An element's period corresponds directly to the number of energy levels occupied by its electrons.
- The group number reflects the number of valence electrons present in an element's outer electron shell, aiding in determining its chemical behavior.
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