What is the arrangement of elements in the periodic table?
Periods and groups
Metals are good conductors of heat and electricity
Match the arrangement category with its description:
Periods ↔️ Horizontal rows ordered by atomic number
Groups ↔️ Vertical columns with similar chemical properties
The periodic table organizes elements into periods and groups
Elements within the same period have varying chemical properties
Groups in the periodic table contain elements with similar chemical properties.
True
Where are metals located on the periodic table?
Left and center
Order the following trends in the periodic table based on their behavior across periods:
1️⃣ Electronegativity increases
2️⃣ Ionization energy increases
3️⃣ Atomic radius decreases
4️⃣ Metallic character decreases
Electronegativity increases across a period
The periodic table is a tabular arrangement of elements based on their atomic number, electron configurations, and recurring chemical properties
The periodic table is a tabular arrangement of chemical elements based on their atomic number, electron configurations, and recurring chemical properties
What is a common property of metals?
Shiny appearance
What type of ions do metals tend to form?
Positive ions
The periodic table helps predict the properties of elements.
True
Why is the organization of the periodic table useful?
Identify trends in properties
Order the following categories in the periodic table based on their arrangement:
1️⃣ Periods
2️⃣ Groups
What are two main categories into which the periodic table is divided?
Metals and non-metals
Atomic radius increases down groups in the periodic table.
True
Sodium has higher ionization energy than potassium.
True
Elements in the same group share similar chemical properties.
True
Steps in arranging the periodic table
1️⃣ Arrange elements by atomic number
2️⃣ Organize into periods (rows)
3️⃣ Arrange into groups (columns)
4️⃣ Ensure groups have similar chemical properties
Non-metals are typically found on the left side of the periodic table.
False
Why do elements in the same group react similarly?
Same outer electrons
Elements in the same group react similarly due to having the same number of outer electrons.
True
What is the basis for arranging elements in the periodic table?
Increasing atomic number
Each period in the periodic table represents the elements that have the same highest energy level
Trends in the periodic table refer to the tendencies of elements to exhibit specific chemical and physical properties
Why does potassium have a larger atomic radius than sodium?