04. Ionization Energy
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Classification of Elements and Periodicity in Properties

89647 The successive ionisation energies of an element are $800,2,000,3,600,25,000$ and $32,000 \mathrm{~kJ} / \mathrm{mol}$. The number of valence electrons are

1 5
2 2
3 3
4 4
BCECE-2009
Classification of Elements and Periodicity in Properties

89653 The correct order of decreasing second ionization enthalpy of $\mathrm{Ti}$ (22), $\mathrm{V}(23), \mathrm{Cr}$ (24) and $M n(25)$ is

1 $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}>\mathrm{V}$
2 Ti $>\mathrm{V}>\mathrm{Cr}>\mathrm{Mn}$
3 $\mathrm{Cr}>\mathrm{Mn}>\mathrm{V}>\mathrm{Ti}$
4 $\mathrm{V}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}$
(NEET-2008)
Classification of Elements and Periodicity in Properties

89662 The order of first ionization energies of the elements $L i, B e, B, N a$ is:

1 $\mathrm{Li}>\mathrm{Be}>\mathrm{B}>\mathrm{Na}$
2 Be $>$ B $>$ Li $>\mathrm{Na}$
3 $\mathrm{Na}>\mathrm{Li}>\mathrm{B}>\mathrm{Be}$
4 $\mathrm{Be}>\mathrm{Li}>\mathrm{B}>\mathrm{Na}$
5 B $>\mathrm{Be}>\mathrm{Li}>\mathrm{Na}$
Kerala-CEE-2005
Classification of Elements and Periodicity in Properties

89666 The energy of last element of $\mathrm{Li}$ will be:

1 $-30.6 \mathrm{eV}$
2 $-13.6 \mathrm{eV}$
3 $-24.6 \mathrm{eV}$
4 $-28.6 \mathrm{eV}$
JCECE - 2004
Classification of Elements and Periodicity in Properties

89661 Assertion: First ionization energy for nitrogen is lower than oxygen.
Reason: Across a period effective nuclear charge decreases.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2005
NEET DIGITAL LIBRARY
Classification of Elements and Periodicity in Properties

89647 The successive ionisation energies of an element are $800,2,000,3,600,25,000$ and $32,000 \mathrm{~kJ} / \mathrm{mol}$. The number of valence electrons are

1 5
2 2
3 3
4 4
BCECE-2009
Classification of Elements and Periodicity in Properties

89653 The correct order of decreasing second ionization enthalpy of $\mathrm{Ti}$ (22), $\mathrm{V}(23), \mathrm{Cr}$ (24) and $M n(25)$ is

1 $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}>\mathrm{V}$
2 Ti $>\mathrm{V}>\mathrm{Cr}>\mathrm{Mn}$
3 $\mathrm{Cr}>\mathrm{Mn}>\mathrm{V}>\mathrm{Ti}$
4 $\mathrm{V}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}$
(NEET-2008)
Classification of Elements and Periodicity in Properties

89662 The order of first ionization energies of the elements $L i, B e, B, N a$ is:

1 $\mathrm{Li}>\mathrm{Be}>\mathrm{B}>\mathrm{Na}$
2 Be $>$ B $>$ Li $>\mathrm{Na}$
3 $\mathrm{Na}>\mathrm{Li}>\mathrm{B}>\mathrm{Be}$
4 $\mathrm{Be}>\mathrm{Li}>\mathrm{B}>\mathrm{Na}$
5 B $>\mathrm{Be}>\mathrm{Li}>\mathrm{Na}$
Kerala-CEE-2005
Classification of Elements and Periodicity in Properties

89666 The energy of last element of $\mathrm{Li}$ will be:

1 $-30.6 \mathrm{eV}$
2 $-13.6 \mathrm{eV}$
3 $-24.6 \mathrm{eV}$
4 $-28.6 \mathrm{eV}$
JCECE - 2004
Classification of Elements and Periodicity in Properties

89661 Assertion: First ionization energy for nitrogen is lower than oxygen.
Reason: Across a period effective nuclear charge decreases.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2005
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Classification of Elements and Periodicity in Properties

89647 The successive ionisation energies of an element are $800,2,000,3,600,25,000$ and $32,000 \mathrm{~kJ} / \mathrm{mol}$. The number of valence electrons are

1 5
2 2
3 3
4 4
BCECE-2009
Classification of Elements and Periodicity in Properties

89653 The correct order of decreasing second ionization enthalpy of $\mathrm{Ti}$ (22), $\mathrm{V}(23), \mathrm{Cr}$ (24) and $M n(25)$ is

1 $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}>\mathrm{V}$
2 Ti $>\mathrm{V}>\mathrm{Cr}>\mathrm{Mn}$
3 $\mathrm{Cr}>\mathrm{Mn}>\mathrm{V}>\mathrm{Ti}$
4 $\mathrm{V}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}$
(NEET-2008)
Classification of Elements and Periodicity in Properties

89662 The order of first ionization energies of the elements $L i, B e, B, N a$ is:

1 $\mathrm{Li}>\mathrm{Be}>\mathrm{B}>\mathrm{Na}$
2 Be $>$ B $>$ Li $>\mathrm{Na}$
3 $\mathrm{Na}>\mathrm{Li}>\mathrm{B}>\mathrm{Be}$
4 $\mathrm{Be}>\mathrm{Li}>\mathrm{B}>\mathrm{Na}$
5 B $>\mathrm{Be}>\mathrm{Li}>\mathrm{Na}$
Kerala-CEE-2005
Classification of Elements and Periodicity in Properties

89666 The energy of last element of $\mathrm{Li}$ will be:

1 $-30.6 \mathrm{eV}$
2 $-13.6 \mathrm{eV}$
3 $-24.6 \mathrm{eV}$
4 $-28.6 \mathrm{eV}$
JCECE - 2004
Classification of Elements and Periodicity in Properties

89661 Assertion: First ionization energy for nitrogen is lower than oxygen.
Reason: Across a period effective nuclear charge decreases.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2005
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Classification of Elements and Periodicity in Properties

89647 The successive ionisation energies of an element are $800,2,000,3,600,25,000$ and $32,000 \mathrm{~kJ} / \mathrm{mol}$. The number of valence electrons are

1 5
2 2
3 3
4 4
BCECE-2009
Classification of Elements and Periodicity in Properties

89653 The correct order of decreasing second ionization enthalpy of $\mathrm{Ti}$ (22), $\mathrm{V}(23), \mathrm{Cr}$ (24) and $M n(25)$ is

1 $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}>\mathrm{V}$
2 Ti $>\mathrm{V}>\mathrm{Cr}>\mathrm{Mn}$
3 $\mathrm{Cr}>\mathrm{Mn}>\mathrm{V}>\mathrm{Ti}$
4 $\mathrm{V}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}$
(NEET-2008)
Classification of Elements and Periodicity in Properties

89662 The order of first ionization energies of the elements $L i, B e, B, N a$ is:

1 $\mathrm{Li}>\mathrm{Be}>\mathrm{B}>\mathrm{Na}$
2 Be $>$ B $>$ Li $>\mathrm{Na}$
3 $\mathrm{Na}>\mathrm{Li}>\mathrm{B}>\mathrm{Be}$
4 $\mathrm{Be}>\mathrm{Li}>\mathrm{B}>\mathrm{Na}$
5 B $>\mathrm{Be}>\mathrm{Li}>\mathrm{Na}$
Kerala-CEE-2005
Classification of Elements and Periodicity in Properties

89666 The energy of last element of $\mathrm{Li}$ will be:

1 $-30.6 \mathrm{eV}$
2 $-13.6 \mathrm{eV}$
3 $-24.6 \mathrm{eV}$
4 $-28.6 \mathrm{eV}$
JCECE - 2004
Classification of Elements and Periodicity in Properties

89661 Assertion: First ionization energy for nitrogen is lower than oxygen.
Reason: Across a period effective nuclear charge decreases.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2005
NEET DIGITAL LIBRARY
Classification of Elements and Periodicity in Properties

89647 The successive ionisation energies of an element are $800,2,000,3,600,25,000$ and $32,000 \mathrm{~kJ} / \mathrm{mol}$. The number of valence electrons are

1 5
2 2
3 3
4 4
BCECE-2009
Classification of Elements and Periodicity in Properties

89653 The correct order of decreasing second ionization enthalpy of $\mathrm{Ti}$ (22), $\mathrm{V}(23), \mathrm{Cr}$ (24) and $M n(25)$ is

1 $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}>\mathrm{V}$
2 Ti $>\mathrm{V}>\mathrm{Cr}>\mathrm{Mn}$
3 $\mathrm{Cr}>\mathrm{Mn}>\mathrm{V}>\mathrm{Ti}$
4 $\mathrm{V}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Ti}$
(NEET-2008)
Classification of Elements and Periodicity in Properties

89662 The order of first ionization energies of the elements $L i, B e, B, N a$ is:

1 $\mathrm{Li}>\mathrm{Be}>\mathrm{B}>\mathrm{Na}$
2 Be $>$ B $>$ Li $>\mathrm{Na}$
3 $\mathrm{Na}>\mathrm{Li}>\mathrm{B}>\mathrm{Be}$
4 $\mathrm{Be}>\mathrm{Li}>\mathrm{B}>\mathrm{Na}$
5 B $>\mathrm{Be}>\mathrm{Li}>\mathrm{Na}$
Kerala-CEE-2005
Classification of Elements and Periodicity in Properties

89666 The energy of last element of $\mathrm{Li}$ will be:

1 $-30.6 \mathrm{eV}$
2 $-13.6 \mathrm{eV}$
3 $-24.6 \mathrm{eV}$
4 $-28.6 \mathrm{eV}$
JCECE - 2004
Classification of Elements and Periodicity in Properties

89661 Assertion: First ionization energy for nitrogen is lower than oxygen.
Reason: Across a period effective nuclear charge decreases.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2005