Why was it important to organize elements in the form of a periodic table?

• A. It made it possible to classify elements according to their color.
• B. It allowed scientists to predict the properties of elements based on their position.
• C. It grouped elements solely by their atomic mass, ignoring chemical properties.
• D. It ensured that all elements were arranged alphabetically.

Answer: (B)

Verified step by step guidance

1. Understand that the periodic table is a systematic arrangement of elements based on their atomic number and recurring chemical properties.
2. Recognize that organizing elements in the periodic table allows scientists to observe patterns and trends in element properties, such as reactivity, electronegativity, and atomic radius.
3. Note that the periodic table groups elements with similar chemical behaviors into columns called groups or families, which helps predict how unknown or newly discovered elements might behave.
4. Realize that this organization goes beyond just atomic mass or arbitrary characteristics like color or alphabetical order; it is based on fundamental atomic structure and properties.
5. Conclude that the importance of the periodic table lies in its ability to predict the properties of elements based on their position, facilitating understanding and discovery in chemistry.