Chemistry Chapter: Periodic Table and Electrons
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Questions and Answers

What is the basis for the classification of elements in the periodic table?

  • Atomic structure of elements (correct)
  • Molecular weight of compounds
  • Chemical reactivity of elements
  • Position of elements in nature

    • Which subshell can accommodate a maximum of 2 electrons?

  • f subshell
  • s subshell (correct)
  • d subshell
  • p subshell

    • How many orbitals does the p subshell contain?

  • 5
  • 2
  • 3 (correct)
  • 1

    • What determines the position of an element in the periodic table when its atomic number is known?

    <p>Electronic configuration</p> Signup and view all the answers

    Which statement is true regarding the orbitals in the subshells?

    <p>The s subshell has one orbital with a spherical shape.</p> Signup and view all the answers

    What is the shape of the orbitals in the d subshell?

    <p>Complex and multi-lobed</p> Signup and view all the answers

    According to modern atomic theory, how do electrons behave around the nucleus?

    <p>They revolve in a three-dimensional region.</p> Signup and view all the answers

    The classification of elements in the periodic table helps to predict what about these elements?

    <p>Their chemical reactivity</p> Signup and view all the answers

    What sentiment is expressed towards the country in the Pledge?

    <p>Respect for parents and elders is essential.</p> Signup and view all the answers

    Which of the following does not describe the core values mentioned in the Pledge?

    <p>Disregard for the environment.</p> Signup and view all the answers

    What is the primary call to action in the National Anthem?

    <p>To celebrate India's geographical diversity.</p> Signup and view all the answers

    How should scientific activity be approached according to the content?

    <p>It must uphold eco-friendly values.</p> Signup and view all the answers

    What is the significance of the phrase 'Bharatha-bhagya-vidhata' in the National Anthem?

    <p>It symbolizes unity among all states.</p> Signup and view all the answers

    Which of the following is NOT part of the ideals expressed in the Pledge?

    <p>Disregard for family values.</p> Signup and view all the answers

    What is a core principle noted for scientific activities in the text?

    <p>Encouraging eco-friendly practices.</p> Signup and view all the answers

    What emotion is primarily evoked through the National Anthem?

    <p>Pride and unity among diverse cultures.</p> Signup and view all the answers

    What is the electronic configuration of sodium?

    <p>2, 8, 1</p> Signup and view all the answers

    Which subshells are present in the M shell?

    <p>s, p, and d</p> Signup and view all the answers

    What is the maximum number of electrons that can be accommodated in the M shell?

    <p>18</p> Signup and view all the answers

    What is the electronic configuration of argon?

    <p>2, 8, 8</p> Signup and view all the answers

    Why does potassium place its last electron in the 4th shell instead of the 3rd shell?

    <p>The 4th shell has a higher energy level.</p> Signup and view all the answers

    How many subshells does the L shell have?

    <p>2</p> Signup and view all the answers

    Which of the following statements about the Bohr model is true?

    <p>It is a simple explanation of atomic structure.</p> Signup and view all the answers

    The capacity of the third shell to accommodate electrons is how many?

    <p>18</p> Signup and view all the answers

    Which blocks of the periodic table do the elements in groups 1 and 2 belong to?

    <p>s block</p> Signup and view all the answers

    How can the period number of an element be determined?

    <p>By its subshell electronic configuration</p> Signup and view all the answers

    What is the main characteristic of elements in the p block?

    <p>They belong to groups 13 to 18</p> Signup and view all the answers

    What is true about the group number of s block elements?

    <p>It corresponds to the number of electrons in the outermost shell</p> Signup and view all the answers

    Which of the following groups is part of the d block?

    <p>Group 10</p> Signup and view all the answers

    What is indicated by the outermost shell in an element’s subshell electronic configuration?

    <p>Element's group number</p> Signup and view all the answers

    Where are f block elements located in the periodic table?

    <p>At the bottom of the table in two separate rows</p> Signup and view all the answers

    How is the group number of an element determined when looking at its subshell electronic configuration?

    <p>By identifying the last subshell filled</p> Signup and view all the answers

    What characteristic is typical for d block elements in relation to their electronic configuration?

    <p>The last electron fills the penultimate shell.</p> Signup and view all the answers

    Which groups in the periodic table contain transition elements?

    <p>Groups 3 to 12</p> Signup and view all the answers

    In which orbital do the last electrons for elements in the 4th period primarily fill?

    <p>4s</p> Signup and view all the answers

    What is a common property of transition elements in terms of their oxidation states?

    <p>They exhibit multiple oxidation states.</p> Signup and view all the answers

    How does the electronic configuration of transition elements reflect their chemical properties?

    <p>They show similarity in properties across periods.</p> Signup and view all the answers

    What is the oxidation state of iron (Fe) in ferrous chloride (FeCl₂)?

    <p>+2</p> Signup and view all the answers

    What can be inferred about the outermost electronic configuration of the d block elements in succeeding periods?

    <p>They will have a uniform configuration in all periods.</p> Signup and view all the answers

    Which of the following statements best explains the similarity in properties of elements in the same group of the periodic table?

    <p>Elements in a group have the same number of outermost electrons.</p> Signup and view all the answers

    What is the stable electronic configuration of chromium (Cr)?

    <p>1s2 2s2 2p6 3s2 3p6 3d5 4s1</p> Signup and view all the answers

    Which one of the following configurations represents stable electronic configuration for copper (Cu)?

    <p>1s2 2s2 2p6 3s2 3p6 3d10 4s1</p> Signup and view all the answers

    How many maximum electrons can the d subshell accommodate?

    <p>10</p> Signup and view all the answers

    In which subshell is the last electron added for chromium (Cr)?

    <p>3d</p> Signup and view all the answers

    What is the total number of electrons present in a neutral atom of chromium?

    <p>26</p> Signup and view all the answers

    What characteristic of the d subshell contributes to the stability of certain electronic configurations?

    <p>A completely filled or half-filled d subshell is more stable.</p> Signup and view all the answers

    Which electronic configuration represents an unstable arrangement for d orbitals?

    <p>1s2 2s2 2p6 3s2 3p6 3d4 4s2</p> Signup and view all the answers

    What is the atomic number of chromium (Cr)?

    <p>24</p> Signup and view all the answers

    Study Notes

    Chemistry Standard X, Part 1

    • This document is a chemistry textbook, part 1, for standard 10 students in Kerala, India, published in 2019.
    • It includes topics like the periodic table, gas laws, mole concept, reactivity series, electrochemistry, and metal production.
    • It incorporates the National Anthem and the Pledge of India.
    • There is an emphasis on practical activities and interactive learning.
    • The textbook uses symbols for additional information, ICT clarity possibilities, and assessment exercises.

    The National Anthem

    • The text contains the full lyrics of the Indian National Anthem.

    Fundamental Duties of Citizens

    • Article 51A of the Indian Constitution outlines the fundamental duties of citizens.
    • These duties cover aspects like abiding by the constitution, respecting national symbols, and upholding national unity.
    • Other duties relate to promoting harmony, preserving heritage, protecting the environment, and striving for excellence

    Contents Outline

    • The textbook is structured into sections (Periodic table and electronic configuration, Gas laws and mole concept, Reactivity series and electrochemistry, Production of metals).
    • Page numbers are referenced for each section, this lists page 7 (periodic table), page 32 (gas laws), page 47 (reactivity series), page 62 (metal production)

    Symbols Used in the Textbook

    • Additional information (not for assessment)
    • ICT possibilities for concept clarity
    • Let us assess
    • Extended activities

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    Chemistry Standard X Part 1 PDF

    Description

    Test your knowledge on the classification of elements in the periodic table and the behavior of electrons according to modern atomic theory. This quiz also touches upon the significance of the National Anthem and the Pledge, merging chemistry with a touch of national sentiment.

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