1.

    Considering the isoelectronic series S2-, Cl-, Ar, K+, Ca2+, and the fact that electron-electron repulsion in the outermost shell influences effective nuclear charge and hence atomic radius, which of the following statements is INCORRECT?

    A

    The radius decreases from S2- to Ca2+.

    B

    Ca2+ has the smallest radius in the series.

    C

    Electron-electron repulsion is the dominant factor influencing the radius in this series, causing the radius to increase from S2- to Ca2+.

    D

    All species have the same number of electrons but different numbers of protons.

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :2.5 mins
    πŸ”„Ncert Concepts :Atomic Radius, Effective Nuclear Charge, Isoelectronic Series

    Related Questions

    1.

    Identify the correct order of solubility of Na2S,CuS{\rm{N}}{{\rm{a}}_2}{\rm{S}},{\rm{CuS}} and ZnS{\rm{ZnS}} in aqueous medium:

    A

    CuS>ZnS>Na2S{\rm{CuS}} > ZnS > N{{\rm{a}}_2}{\rm{S}}

    B

    ZnS>Na2S>CuS{\rm{ZnS}} > N{{\rm{a}}_2}{\rm{S}} > CuS

    C

    Na2S>CuS>ZnS{\rm{N}}{{\rm{a}}_2}{\rm{S}} > CuS > ZnS

    D

    Na2S>ZnS>CuS{\rm{N}}{{\rm{a}}_2}{\rm{S}} > ZnS > CuS

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Solubility, Ionic compounds, Covalent character, Lattice energy

    2.

    The correct order of ionic radii is:

    A

    Fe>Fe2+>Fe3+{\rm{Fe}} > F{{\rm{e}}^{2 + }} > F{{\rm{e}}^{3 + }}

    B

    O2βˆ’>Oβˆ’>O+{{\rm{O}}^{2 - }} > {{\rm{O}}^ - } > {{\rm{O}}^ + }

    C

    Iβˆ’>I>I+{{\rm{I}}^ - } > I > {{\rm{I}}^ + }

    D

    All of these

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :ionic radii, effective nuclear charge, electron-electron repulsion

    3.

    Which group of atoms have nearly same atomic radius?

    A

    Na,K,Rb,Cs{\rm{Na}},{\rm{K}},{\rm{Rb}},{\rm{Cs}}

    B

    Li,Be,B,C{\rm{Li}},{\rm{Be}},{\rm{B}},{\rm{C}}

    C

    Fe,Co,Ni,Cu{\rm{Fe}},{\rm{Co}},{\rm{Ni}},{\rm{Cu}}

    D

    F,Cl,Br,I{\rm{F}},{\rm{Cl}},{\rm{Br}},{\rm{I}}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :atomic radius, periodic trends, transition metals

    4.

    Which group of atoms have nearly same atomic radius?

    A

    Na,K,Rb,Cs{\rm{Na}},{\rm{K}},{\rm{Rb}},{\rm{Cs}}

    B

    Li,Be,B,C{\rm{Li}},{\rm{Be}},{\rm{B}},{\rm{C}}

    C

    Fe,Co,Ni,Cu{\rm{Fe}},{\rm{Co}},{\rm{Ni}},{\rm{Cu}}

    D

    F,Cl,Br,I{\rm{F}},{\rm{Cl}},{\rm{Br}},{\rm{I}}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :atomic radius, periodic trends, transition metals, shielding effect

    5.

    The ionic radii of N3βˆ’,O2βˆ’and Fβˆ’{{\rm{N}}^{3 - }},{{\rm{O}}^{2 - }}{\rm{and}}\,{{\rm{F}}^ - } are respectively given by:

    A

    $\begin{array}{*{20}{l}}

    {1.36,{\rm{ }}1.40,{\rm{ }}1.71}

    \end{array}$

    B

    $\begin{array}{*{20}{l}}

    {1.36,{\rm{ }}1.71,{\rm{ }}1.40}

    \end{array}$

    C

    $\begin{array}{*{20}{l}}

    {1.71,{\rm{ }}1.40,{\rm{ }}1.36}

    \end{array}$

    D

    $\begin{array}{*{20}{l}}

    {1.71,{\rm{ }}1.36,{\rm{ }}1.40}

    \end{array}$

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :ionic radii, isoelectronic species, effective nuclear charge

    6.

    The electronic configuration of transition elements is exhibited by

    A

    (nβˆ’1)d1βˆ’10,β€…β€Šns2\left( {n - 1} \right){d^{1 - 10}},\;n{s^2}

    B

    ns2(nβˆ’1)d10n{s^2}\left( {n - 1} \right){d^{10}}

    C

    ns1n{s^1}

    D

    ns2,β€…β€Šnp5n{s^2},\;n{p^5}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :electronic configuration, transition elements, d-block elements

    7.

    The correct order of ionic radii is

    A

    O > {O^ - } > {O^{2 - }}

    B

    A{l^ + } > A{l^{2 + }} > A{l^{3 + }}

    C

    {S^{2 - }} > {K^ + } > C{l^ - }

    D

    M{g^{2 + }} > N{a^ + } > {N^{3 - }}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :ionic radii, effective nuclear charge, electron repulsion

    8.

    The correct order of ionic radii is:

    A

    Fe>Fe2+>Fe3+{\rm{Fe}} > F{{\rm{e}}^{2 + }} > F{{\rm{e}}^{3 + }}

    B

    O2βˆ’>Oβˆ’>O+{{\rm{O}}^{2 - }} > {{\rm{O}}^ - } > {{\rm{O}}^ + }

    C

    Iβˆ’>I>I+{{\rm{I}}^ - } > I > {{\rm{I}}^ + }

    D

    All of these

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :ionic radii, effective nuclear charge, electron shielding

    9.

    Considering the isoelectronic series S2-, Cl-, Ar, K+, Ca2+, and the fact that electron-electron repulsion in the outermost shell influences effective nuclear charge and hence atomic radius, which of the following statements is INCORRECT?

    A

    The radius decreases from S2- to Ca2+.

    B

    Ca2+ has the smallest radius in the series.

    C

    Electron-electron repulsion is the dominant factor influencing the radius in this series, causing the radius to increase from S2- to Ca2+.

    D

    All species have the same number of electrons but different numbers of protons.

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :2.5 mins
    πŸ”„Ncert Concepts :Atomic Radius, Effective Nuclear Charge, Isoelectronic Series

    10.

    Which of the following shows diagonal relationship

    A

    boron and silicon

    B

    boron and carbon

    C

    boron and gallium

    D

    boron and aluminium

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification of Elements and Periodicity in Properties
    🎯Topic:Atomic Radius
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :diagonal relationship, periodic table, chemical properties

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