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FAQs on Quiz on Periodic Table (JEE Adv Level)

1. What is the periodic table?
Ans. The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It provides a systematic framework to study and understand the behavior and characteristics of elements.
2. How many elements are there in the periodic table?
Ans. Currently, there are 118 known elements in the periodic table. These elements range from hydrogen (atomic number 1) to oganesson (atomic number 118), the heaviest element discovered so far.
3. What are periods and groups in the periodic table?
Ans. Periods in the periodic table refer to the horizontal rows, numbered from 1 to 7. Each period represents the energy level or shell in which the elements' outer electrons are found. On the other hand, groups (also known as families) refer to the vertical columns, numbered from 1 to 18. Elements within the same group share similar chemical properties due to their similar electron configurations.
4. How are elements arranged within a group in the periodic table?
Ans. Elements within a group in the periodic table are arranged based on their valence electrons. The number of valence electrons determines the chemical properties and reactivity of an element. For example, elements in Group 1 (alkali metals) have one valence electron, while elements in Group 17 (halogens) have seven valence electrons.
5. What is the significance of the periodic table in chemistry?
Ans. The periodic table is of immense significance in chemistry as it provides a structured arrangement of elements that helps in understanding their properties, trends, and relationships. It allows scientists to predict and explain the behavior of elements, their reactivity, and their ability to form compounds. The periodic table serves as a fundamental tool for studying various branches of chemistry, including inorganic, organic, and physical chemistry.
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