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Indian Navy SSR S Block Elements — practice questions — page 2

Explore 51 free S Block Elements questions in Indian Navy SSR Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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S Block Elements questions and exercises with answers

Showing questions 31–51 of 51.

Single, double and triple bondsRead the answer and worked solution →True or false: Lewis structuresRead the answer and worked solution →Complete the definition of resonanceRead the answer and worked solution →Tap every bond parameter the chapter namesRead the answer and worked solution →True or false: ionic solidsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Bonded pair or lone pair?Read the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why resonance is neededRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: what bond parameters affectRead the answer and worked solution →Bond parameters in useRead the answer and worked solution →Which parameter answers this?Read the answer and worked solution →True or false: resonanceRead the answer and worked solution →Order the steps: draw a Lewis structureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: structureRead the answer and worked solution →Flip and pair: parameter with what it measuresRead the answer and worked solution →

Worked practice questions

Single, double and triple bonds

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Questions
  1. Question
    A single covalent bond shares
    Choices
    1. one electron pair
    2. two pairs
    3. three pairs
    Correct choice
    one electron pair
  2. Question
    A double bond shares
    Choices
    1. one pair
    2. two electron pairs
    3. three pairs
    Correct choice
    two electron pairs
  3. Question
    A triple bond shares
    Choices
    1. two pairs
    2. four pairs
    3. three electron pairs
    Correct choice
    three electron pairs
  4. Question
    Electron pairs not involved in bonding are called
    Choices
    1. lone pairs
    2. bonded pairs
    3. free pairs
    Correct choice
    lone pairs
The number of shared pairs sets the bond order. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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True or false: Lewis structures

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Questions
  1. Statement is true
    Yes
    Statement
    Lewis dot symbols show the valence electrons of an atom.
  2. Statement is true
    Yes
    Statement
    Lewis dot structures show bonded pairs and lone pairs.
  3. Statement is true
    No
    Statement
    Lone pairs take part in bonding.
  4. Statement is true
    Yes
    Statement
    Some molecules cannot be described by a single Lewis structure.
  5. Statement is true
    Yes
    Statement
    Multiple bonds share more than one electron pair.
What the dot structures show and what they omit. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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Complete the definition of resonance

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Missing parts
  1. Answer
    skeletal
    Choices
    1. skeletal
    2. ionic
    3. crystal
  2. Answer
    resonance
    Choices
    1. resonance
    2. hybridisation
    3. polarity
  3. Answer
    hybrid
    Choices
    1. hybrid
    2. lattice
    3. pair
Complete the statement
When one Lewis structure will not describe a molecule accurately, several structures on the same {0} structure are written. This is called {1}, and the contributing forms together make the resonance {2}.
Resonance is a description of the model's limits, not of a real oscillation. Source: syllabus Chemistry, Ch 4 Chemical Bonding and Molecular Structure.

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