04. Ionization Energy
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Classification of Elements and Periodicity in Properties

89671 The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are, respectively $23,24,25$ and 26 . Which one of these may be expected to have the highest second ionisation enthalpy?

1 $\mathrm{V}$
2 $\mathrm{Cr}$
3 $\mathrm{Mn}$
4 $\mathrm{Fe}$
(AIEEE 2003)
Classification of Elements and Periodicity in Properties

89676 The electronic configuration of elements $A, B$, and $\mathrm{C}$ are $[\mathrm{He}] 2 \mathrm{~s}^{\mathrm{n}},[\mathrm{Ne}] 3 \mathrm{~s}^1$ and [Ar] $4 \mathrm{~s}^1$ respectively, which one of the following order is correct for the first ionization potentials (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of $A, B$ and $C$ ?

1 A $>$ B $>$ C
2 C $>$ B $>$ A
3 B $>$ C $>$ A
4 C $>$ A $>$ B
A.P.EAMCET 2001
Classification of Elements and Periodicity in Properties

89677 The electronic configuration of elements $A, B$ and $C$ are $[\mathrm{He}] 2 \mathrm{~s}^1, \quad[\mathrm{Ne}] 3 \mathrm{~s}^1$ and $[\mathrm{Ar}] 4 \mathrm{~s}^1$ respectively, which one of the following protentials is correct for the first ionization

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{C}>\mathrm{B}>\mathrm{A}$
3 B $>$ C $>$ A
4 C $>$ A $>$ B
AP EAMCET (Engg.) 2001
Classification of Elements and Periodicity in Properties

89679 Which of the following species has the highest ionization potential?

1 $\mathrm{Li}^{+}$
2 $\mathrm{Mg}^{+}$
3 $\mathrm{Al}^{+}$
4 $\mathrm{Ne}$
\begin{aligned}
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Classification of Elements and Periodicity in Properties

89671 The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are, respectively $23,24,25$ and 26 . Which one of these may be expected to have the highest second ionisation enthalpy?

1 $\mathrm{V}$
2 $\mathrm{Cr}$
3 $\mathrm{Mn}$
4 $\mathrm{Fe}$
(AIEEE 2003)
Classification of Elements and Periodicity in Properties

89676 The electronic configuration of elements $A, B$, and $\mathrm{C}$ are $[\mathrm{He}] 2 \mathrm{~s}^{\mathrm{n}},[\mathrm{Ne}] 3 \mathrm{~s}^1$ and [Ar] $4 \mathrm{~s}^1$ respectively, which one of the following order is correct for the first ionization potentials (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of $A, B$ and $C$ ?

1 A $>$ B $>$ C
2 C $>$ B $>$ A
3 B $>$ C $>$ A
4 C $>$ A $>$ B
A.P.EAMCET 2001
Classification of Elements and Periodicity in Properties

89677 The electronic configuration of elements $A, B$ and $C$ are $[\mathrm{He}] 2 \mathrm{~s}^1, \quad[\mathrm{Ne}] 3 \mathrm{~s}^1$ and $[\mathrm{Ar}] 4 \mathrm{~s}^1$ respectively, which one of the following protentials is correct for the first ionization

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{C}>\mathrm{B}>\mathrm{A}$
3 B $>$ C $>$ A
4 C $>$ A $>$ B
AP EAMCET (Engg.) 2001
Classification of Elements and Periodicity in Properties

89679 Which of the following species has the highest ionization potential?

1 $\mathrm{Li}^{+}$
2 $\mathrm{Mg}^{+}$
3 $\mathrm{Al}^{+}$
4 $\mathrm{Ne}$
\begin{aligned}
NEET DIGITAL LIBRARY
Classification of Elements and Periodicity in Properties

89671 The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are, respectively $23,24,25$ and 26 . Which one of these may be expected to have the highest second ionisation enthalpy?

1 $\mathrm{V}$
2 $\mathrm{Cr}$
3 $\mathrm{Mn}$
4 $\mathrm{Fe}$
(AIEEE 2003)
Classification of Elements and Periodicity in Properties

89676 The electronic configuration of elements $A, B$, and $\mathrm{C}$ are $[\mathrm{He}] 2 \mathrm{~s}^{\mathrm{n}},[\mathrm{Ne}] 3 \mathrm{~s}^1$ and [Ar] $4 \mathrm{~s}^1$ respectively, which one of the following order is correct for the first ionization potentials (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of $A, B$ and $C$ ?

1 A $>$ B $>$ C
2 C $>$ B $>$ A
3 B $>$ C $>$ A
4 C $>$ A $>$ B
A.P.EAMCET 2001
Classification of Elements and Periodicity in Properties

89677 The electronic configuration of elements $A, B$ and $C$ are $[\mathrm{He}] 2 \mathrm{~s}^1, \quad[\mathrm{Ne}] 3 \mathrm{~s}^1$ and $[\mathrm{Ar}] 4 \mathrm{~s}^1$ respectively, which one of the following protentials is correct for the first ionization

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{C}>\mathrm{B}>\mathrm{A}$
3 B $>$ C $>$ A
4 C $>$ A $>$ B
AP EAMCET (Engg.) 2001
Classification of Elements and Periodicity in Properties

89679 Which of the following species has the highest ionization potential?

1 $\mathrm{Li}^{+}$
2 $\mathrm{Mg}^{+}$
3 $\mathrm{Al}^{+}$
4 $\mathrm{Ne}$
\begin{aligned}
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Classification of Elements and Periodicity in Properties

89671 The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are, respectively $23,24,25$ and 26 . Which one of these may be expected to have the highest second ionisation enthalpy?

1 $\mathrm{V}$
2 $\mathrm{Cr}$
3 $\mathrm{Mn}$
4 $\mathrm{Fe}$
(AIEEE 2003)
Classification of Elements and Periodicity in Properties

89676 The electronic configuration of elements $A, B$, and $\mathrm{C}$ are $[\mathrm{He}] 2 \mathrm{~s}^{\mathrm{n}},[\mathrm{Ne}] 3 \mathrm{~s}^1$ and [Ar] $4 \mathrm{~s}^1$ respectively, which one of the following order is correct for the first ionization potentials (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of $A, B$ and $C$ ?

1 A $>$ B $>$ C
2 C $>$ B $>$ A
3 B $>$ C $>$ A
4 C $>$ A $>$ B
A.P.EAMCET 2001
Classification of Elements and Periodicity in Properties

89677 The electronic configuration of elements $A, B$ and $C$ are $[\mathrm{He}] 2 \mathrm{~s}^1, \quad[\mathrm{Ne}] 3 \mathrm{~s}^1$ and $[\mathrm{Ar}] 4 \mathrm{~s}^1$ respectively, which one of the following protentials is correct for the first ionization

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{C}>\mathrm{B}>\mathrm{A}$
3 B $>$ C $>$ A
4 C $>$ A $>$ B
AP EAMCET (Engg.) 2001
Classification of Elements and Periodicity in Properties

89679 Which of the following species has the highest ionization potential?

1 $\mathrm{Li}^{+}$
2 $\mathrm{Mg}^{+}$
3 $\mathrm{Al}^{+}$
4 $\mathrm{Ne}$
\begin{aligned}
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