04. Ionization Energy
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Classification of Elements and Periodicity in Properties

89692 Ionisation energy of $\mathrm{He}^{+}$is $19.6 \times 10^{-18} \mathrm{~J}$ atom $^{-1}$. The energy of the first stationary state $(n=1)$ of $\mathbf{L i}^{2+}$ is

1 $4.41 \times 10^{-16} \mathrm{~J} \mathrm{atom}^{-1}$
2 $-4.41 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
3 $–2.2 \times 10^{-15} \mathrm{~J} \mathrm{atom}^{-1}$
4 $8.82 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
JEE Main
Classification of Elements and Periodicity in Properties

89693 Consider the following changes
$$
\begin{aligned}
& \mathbf{M}(\mathrm{s}) \rightarrow \mathbf{M}(\mathrm{g}) \quad \text {...(1) } \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \\
& \mathbf{M}(\mathbf{g}) \rightarrow \mathbf{M}^{+}(g)+\mathrm{e}^{-} \\
& \mathbf{M}^{+}(\mathbf{g}) \rightarrow \mathbf{M}^{2+}(\mathrm{g})+\mathrm{e}^{-} \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \text {...(5) } \\
&
\end{aligned}
$$
The second ionization energy of $M$ could be determined from the energy values associated with

1 $1+2+4$
2 $1+5-3$
3 $2+3-4$
4 $5-3$
2015
Classification of Elements and Periodicity in Properties

89593 Match the following?






























property metal
(a) Element with highest second ionization enthalpy (_1 _2) (i)
(b) Element with highest third ionization enthalpy (_1 _3) (ii)
(c) in [( )_6] (iii)
(d) element with highest heat of atomization (_1 ) (iv)
(v)

1 (a $\rightarrow$ iii), (b $\rightarrow$ i), $(\mathrm{c} \rightarrow \mathrm{v}),(\mathrm{d} \rightarrow$ iv)
2 (a $\rightarrow$ iii), (b $\rightarrow$ iv), (c $\rightarrow$ ii), $(\mathrm{d} \rightarrow \mathrm{v})$
3 $(\mathrm{a} \rightarrow \mathrm{iv}),(\mathrm{b} \rightarrow \mathrm{i}),(\mathrm{c} \rightarrow$ ii), $(\mathrm{d} \rightarrow$ iii)
4 $(\mathrm{a} \rightarrow \mathrm{v}),(\mathrm{b} \rightarrow \mathrm{iv}),(\mathrm{c} \rightarrow \mathrm{i}),(\mathrm{d} \rightarrow$ iii)
AP EAPCET 20.08.2021 Shift-II
Classification of Elements and Periodicity in Properties

89567 The correct of ionisation energy of $C, N, O, F$ is

1 F $<\mathrm{O}<\mathrm{N}<\mathrm{C}$
2 $\mathrm{F}<\mathrm{N}<\mathrm{C}<\mathrm{O}$
3 C $<\mathrm{N}<\mathrm{O}<\mathrm{F}$
4 $\mathrm{C}<\mathrm{O}<\mathrm{N}<\mathrm{F}$
2009
NEET DIGITAL LIBRARY
Classification of Elements and Periodicity in Properties

89692 Ionisation energy of $\mathrm{He}^{+}$is $19.6 \times 10^{-18} \mathrm{~J}$ atom $^{-1}$. The energy of the first stationary state $(n=1)$ of $\mathbf{L i}^{2+}$ is

1 $4.41 \times 10^{-16} \mathrm{~J} \mathrm{atom}^{-1}$
2 $-4.41 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
3 $–2.2 \times 10^{-15} \mathrm{~J} \mathrm{atom}^{-1}$
4 $8.82 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
JEE Main
Classification of Elements and Periodicity in Properties

89693 Consider the following changes
$$
\begin{aligned}
& \mathbf{M}(\mathrm{s}) \rightarrow \mathbf{M}(\mathrm{g}) \quad \text {...(1) } \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \\
& \mathbf{M}(\mathbf{g}) \rightarrow \mathbf{M}^{+}(g)+\mathrm{e}^{-} \\
& \mathbf{M}^{+}(\mathbf{g}) \rightarrow \mathbf{M}^{2+}(\mathrm{g})+\mathrm{e}^{-} \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \text {...(5) } \\
&
\end{aligned}
$$
The second ionization energy of $M$ could be determined from the energy values associated with

1 $1+2+4$
2 $1+5-3$
3 $2+3-4$
4 $5-3$
2015
Classification of Elements and Periodicity in Properties

89593 Match the following?






























property metal
(a) Element with highest second ionization enthalpy (_1 _2) (i)
(b) Element with highest third ionization enthalpy (_1 _3) (ii)
(c) in [( )_6] (iii)
(d) element with highest heat of atomization (_1 ) (iv)
(v)

1 (a $\rightarrow$ iii), (b $\rightarrow$ i), $(\mathrm{c} \rightarrow \mathrm{v}),(\mathrm{d} \rightarrow$ iv)
2 (a $\rightarrow$ iii), (b $\rightarrow$ iv), (c $\rightarrow$ ii), $(\mathrm{d} \rightarrow \mathrm{v})$
3 $(\mathrm{a} \rightarrow \mathrm{iv}),(\mathrm{b} \rightarrow \mathrm{i}),(\mathrm{c} \rightarrow$ ii), $(\mathrm{d} \rightarrow$ iii)
4 $(\mathrm{a} \rightarrow \mathrm{v}),(\mathrm{b} \rightarrow \mathrm{iv}),(\mathrm{c} \rightarrow \mathrm{i}),(\mathrm{d} \rightarrow$ iii)
AP EAPCET 20.08.2021 Shift-II
Classification of Elements and Periodicity in Properties

89567 The correct of ionisation energy of $C, N, O, F$ is

1 F $<\mathrm{O}<\mathrm{N}<\mathrm{C}$
2 $\mathrm{F}<\mathrm{N}<\mathrm{C}<\mathrm{O}$
3 C $<\mathrm{N}<\mathrm{O}<\mathrm{F}$
4 $\mathrm{C}<\mathrm{O}<\mathrm{N}<\mathrm{F}$
2009
Join With Us for More Updates
Classification of Elements and Periodicity in Properties

89692 Ionisation energy of $\mathrm{He}^{+}$is $19.6 \times 10^{-18} \mathrm{~J}$ atom $^{-1}$. The energy of the first stationary state $(n=1)$ of $\mathbf{L i}^{2+}$ is

1 $4.41 \times 10^{-16} \mathrm{~J} \mathrm{atom}^{-1}$
2 $-4.41 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
3 $–2.2 \times 10^{-15} \mathrm{~J} \mathrm{atom}^{-1}$
4 $8.82 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
JEE Main
Classification of Elements and Periodicity in Properties

89693 Consider the following changes
$$
\begin{aligned}
& \mathbf{M}(\mathrm{s}) \rightarrow \mathbf{M}(\mathrm{g}) \quad \text {...(1) } \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \\
& \mathbf{M}(\mathbf{g}) \rightarrow \mathbf{M}^{+}(g)+\mathrm{e}^{-} \\
& \mathbf{M}^{+}(\mathbf{g}) \rightarrow \mathbf{M}^{2+}(\mathrm{g})+\mathrm{e}^{-} \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \text {...(5) } \\
&
\end{aligned}
$$
The second ionization energy of $M$ could be determined from the energy values associated with

1 $1+2+4$
2 $1+5-3$
3 $2+3-4$
4 $5-3$
2015
Classification of Elements and Periodicity in Properties

89593 Match the following?






























property metal
(a) Element with highest second ionization enthalpy (_1 _2) (i)
(b) Element with highest third ionization enthalpy (_1 _3) (ii)
(c) in [( )_6] (iii)
(d) element with highest heat of atomization (_1 ) (iv)
(v)

1 (a $\rightarrow$ iii), (b $\rightarrow$ i), $(\mathrm{c} \rightarrow \mathrm{v}),(\mathrm{d} \rightarrow$ iv)
2 (a $\rightarrow$ iii), (b $\rightarrow$ iv), (c $\rightarrow$ ii), $(\mathrm{d} \rightarrow \mathrm{v})$
3 $(\mathrm{a} \rightarrow \mathrm{iv}),(\mathrm{b} \rightarrow \mathrm{i}),(\mathrm{c} \rightarrow$ ii), $(\mathrm{d} \rightarrow$ iii)
4 $(\mathrm{a} \rightarrow \mathrm{v}),(\mathrm{b} \rightarrow \mathrm{iv}),(\mathrm{c} \rightarrow \mathrm{i}),(\mathrm{d} \rightarrow$ iii)
AP EAPCET 20.08.2021 Shift-II
Classification of Elements and Periodicity in Properties

89567 The correct of ionisation energy of $C, N, O, F$ is

1 F $<\mathrm{O}<\mathrm{N}<\mathrm{C}$
2 $\mathrm{F}<\mathrm{N}<\mathrm{C}<\mathrm{O}$
3 C $<\mathrm{N}<\mathrm{O}<\mathrm{F}$
4 $\mathrm{C}<\mathrm{O}<\mathrm{N}<\mathrm{F}$
2009
For More Updates join with Us
Classification of Elements and Periodicity in Properties

89692 Ionisation energy of $\mathrm{He}^{+}$is $19.6 \times 10^{-18} \mathrm{~J}$ atom $^{-1}$. The energy of the first stationary state $(n=1)$ of $\mathbf{L i}^{2+}$ is

1 $4.41 \times 10^{-16} \mathrm{~J} \mathrm{atom}^{-1}$
2 $-4.41 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
3 $–2.2 \times 10^{-15} \mathrm{~J} \mathrm{atom}^{-1}$
4 $8.82 \times 10^{-17} \mathrm{~J} \mathrm{atom}^{-1}$
JEE Main
Classification of Elements and Periodicity in Properties

89693 Consider the following changes
$$
\begin{aligned}
& \mathbf{M}(\mathrm{s}) \rightarrow \mathbf{M}(\mathrm{g}) \quad \text {...(1) } \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \\
& \mathbf{M}(\mathbf{g}) \rightarrow \mathbf{M}^{+}(g)+\mathrm{e}^{-} \\
& \mathbf{M}^{+}(\mathbf{g}) \rightarrow \mathbf{M}^{2+}(\mathrm{g})+\mathrm{e}^{-} \\
& \mathrm{M}(\mathrm{g}) \rightarrow \mathrm{M}^{2+}(\mathrm{g})+2 \mathrm{e}^{-} \text {...(5) } \\
&
\end{aligned}
$$
The second ionization energy of $M$ could be determined from the energy values associated with

1 $1+2+4$
2 $1+5-3$
3 $2+3-4$
4 $5-3$
2015
Classification of Elements and Periodicity in Properties

89593 Match the following?






























property metal
(a) Element with highest second ionization enthalpy (_1 _2) (i)
(b) Element with highest third ionization enthalpy (_1 _3) (ii)
(c) in [( )_6] (iii)
(d) element with highest heat of atomization (_1 ) (iv)
(v)

1 (a $\rightarrow$ iii), (b $\rightarrow$ i), $(\mathrm{c} \rightarrow \mathrm{v}),(\mathrm{d} \rightarrow$ iv)
2 (a $\rightarrow$ iii), (b $\rightarrow$ iv), (c $\rightarrow$ ii), $(\mathrm{d} \rightarrow \mathrm{v})$
3 $(\mathrm{a} \rightarrow \mathrm{iv}),(\mathrm{b} \rightarrow \mathrm{i}),(\mathrm{c} \rightarrow$ ii), $(\mathrm{d} \rightarrow$ iii)
4 $(\mathrm{a} \rightarrow \mathrm{v}),(\mathrm{b} \rightarrow \mathrm{iv}),(\mathrm{c} \rightarrow \mathrm{i}),(\mathrm{d} \rightarrow$ iii)
AP EAPCET 20.08.2021 Shift-II
Classification of Elements and Periodicity in Properties

89567 The correct of ionisation energy of $C, N, O, F$ is

1 F $<\mathrm{O}<\mathrm{N}<\mathrm{C}$
2 $\mathrm{F}<\mathrm{N}<\mathrm{C}<\mathrm{O}$
3 C $<\mathrm{N}<\mathrm{O}<\mathrm{F}$
4 $\mathrm{C}<\mathrm{O}<\mathrm{N}<\mathrm{F}$
2009
NEET DIGITAL LIBRARY