Learning Path
Question & Answer1
Understand Question2
Review Options3
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Explore TopicChoose the Best Answer
A
Elements are arranged in order of increasing atomic number.
B
Groups in the Periodic Table represent elements with similar chemical properties.
C
All elements are found in the same row regardless of their properties.
D
Periods indicate the number of electron shells an element has.
E
Noble gases are located on the left side of the table.
Understanding the Answer
Let's break down why this is correct
Answer
The Periodic Table arranges elements in rows called periods that increase in atomic number from left to right, so each new row starts with the next element after the previous period’s last element. Elements in the same column, called a group or family, share similar valence electron configurations and therefore exhibit comparable chemical behavior. The table’s layout shows that properties repeat every 18 elements, a phenomenon called periodicity, which explains why elements in the same group behave similarly. For example, sodium (Na) and potassium (K) are both in group 1, each having one valence electron, which is why they are highly reactive metals. This structure is organized so that atomic number, electron configuration, and chemical properties all align in a predictable pattern.
Detailed Explanation
Elements are put in order of increasing atomic number so that each step adds one more proton to the nucleus. Other options are incorrect because Some students think every row holds elements with the same properties, but rows actually show how electron shells grow; The misconception is that noble gases sit on the far left.
Key Concepts
Periodic Table Structure
Atomic Number and Properties
Chemical Behavior of Elements
Topic
Periodic Table Structure
Difficulty
easy level question
Cognitive Level
understand
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