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Modern Periodic Table - Periodic Classification of Elements, Class 10, Science Video Lecture
FAQs on Modern Periodic Table - Periodic Classification of Elements, Class 10, Science Video Lecture
| 1. What is the modern periodic table and how is it useful? |  |
Ans. The modern periodic table is a tabular arrangement of elements based on their atomic numbers, electron configurations, and recurring chemical properties. It helps in organizing and classifying the elements systematically. The periodic table provides essential information about the elements such as their atomic mass, atomic number, symbol, and chemical properties. It enables scientists to predict the behavior and properties of elements, understand their relationships, and discover new elements.
| 2. How are elements arranged in the modern periodic table? | |
Ans. Elements in the modern periodic table are arranged in order of increasing atomic number. They are organized into rows called periods and columns called groups. The periods represent the number of electron shells an atom possesses, while the groups categorize elements with similar chemical properties. The vertical columns in the periodic table are numbered from 1 to 18, and each group has specific characteristics and valence electrons.
| 3. What is the significance of valence electrons in the periodic table? | |
Ans. Valence electrons are the electrons present in the outermost energy level of an atom. The number of valence electrons determines the chemical properties and reactivity of an element. Elements in the same group of the periodic table have the same number of valence electrons, making them exhibit similar chemical behavior. This allows scientists to predict the bonding capabilities and reactions of elements based on their valence electron configuration.
| 4. How does the periodic table help in understanding periodic trends? | |
Ans. The periodic table provides valuable insights into periodic trends, which are patterns that emerge in the properties of elements as you move across a period or down a group. Some common periodic trends include atomic radius, ionization energy, electron affinity, and electronegativity. By analyzing the position of elements in the periodic table, scientists can observe and study these trends, which help in predicting an element's behavior and its interaction with other elements.
| 5. What are the advantages of the modern periodic table in scientific research? | |
Ans. The modern periodic table has several advantages in scientific research. It allows scientists to quickly access information about an element's atomic structure, properties, and behavior. The table's organization helps in identifying trends, patterns, and relationships between elements, facilitating the discovery of new elements and compounds. Additionally, the periodic table serves as a foundation for various branches of chemistry, including organic chemistry, inorganic chemistry, and materials science, aiding in the understanding and advancement of these fields.
Text Transcript from Video
Morton periodic table the modern
periodic table is the most important
chemistry reference there is in a
periodic table the elements are arranged
in an informative array the basis of the
modern periodic table is the atomic
number elements are arranged in the
increasing order of their atomic numbers
the horizontal rows of elements are
called periods the vertical columns are
called groups there are seven periods
and eighteen groups nonmetals are
located towards the right of the
periodic table except hydrogen about 80
percent of the elements are metals
metals are located towards the extreme
left and middle of the periodic table
observe the location of metalloids in
the periodic table there are elements
that have properties intermediate
between metals and nonmetals
click on any of the first 18 elements to
view their at electronic configuration
you
periodic table is the most important
chemistry reference there is in a
periodic table the elements are arranged
in an informative array the basis of the
modern periodic table is the atomic
number elements are arranged in the
increasing order of their atomic numbers
the horizontal rows of elements are
called periods the vertical columns are
called groups there are seven periods
and eighteen groups nonmetals are
located towards the right of the
periodic table except hydrogen about 80
percent of the elements are metals
metals are located towards the extreme
left and middle of the periodic table
observe the location of metalloids in
the periodic table there are elements
that have properties intermediate
between metals and nonmetals
click on any of the first 18 elements to
view their at electronic configuration
you
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